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Siryn

Siryn, whose real name is Theresa Cassidy, is a in , renowned for her inherited sonic powers that allow her to emit disruptive screams, enabling flight, disorientation of foes, and other auditory manipulations. Born to () and Maeve Rourke Cassidy, she was presumed killed alongside her mother in a terrorist bombing during her father's undercover mission, but survived and was secretly raised by her criminal cousin, . Debuting as a in Spider-Woman #37 (1981), Siryn transitioned to heroism after being exonerated, joining teams such as and , where she developed key relationships, including a romantic partnership with () that resulted in the birth—and subsequent absorption by a Madrox duplicate—of their son, Sean. Following her father's death, Siryn assumed the moniker and inherited the family estate, Cassidy Keep, while battling personal struggles like before finding stability in her community. In a pivotal arc, she ascended to godhood as the Morrigan, a figure from , granting her immortality, enhanced supernatural abilities, and a role in larger cosmic events, though she later relinquished some powers. On the nation of , Siryn reunited with her resurrected father before its fall; following the destruction of in 2024, she was captured, imprisoned in Graymalkin Prison, and brainwashed into opposing , embodying themes of , family legacy, and resilience across decades of publication.

Publication history

Creation and concept

Siryn was created by writer and artist Steve Leialoha as a character with sonic-based abilities, debuting in Spider-Woman #37 in April 1981. The character's introduction occurred during a storyline where Spider-Woman confronts a criminal gang during a robbery at the , marking Siryn's entry into the as a supporting . Conceived as the daughter of the established member (Sean Cassidy), Siryn was designed to inherit his sonic powers, thereby extending the theme of mutants with auditory abilities within the broader X-Men lore. This familial connection provided a link to existing characters without altering their core stories, while introducing a of mutant heritage rooted in culture and . Her powers, including sonic screams capable of disorientation and flight, mirrored Banshee's but allowed for unique applications such as hypnotic suggestion. In her initial concept, Siryn was portrayed as an ally to her cousin , a known , establishing a criminal background influenced by her upbringing after her mother's death in a bombing. This setup highlighted themes of redemption, as her debut involvement in a plot against and the set the stage for her eventual shift toward heroism. The character's early development emphasized her ties to the Cassidy family dynamics, positioning her as a bridge between villainy and the mutant heroism exemplified by her father.

1980s–1990s

Siryn made her debut in the three-issue arc of #37–39 (April–August 1981), where she assisted her cousin and the in a at the , clashing with and briefly encountering the . Following sporadic appearances and her involvement with the team in the 1987 , Siryn joined Cable's newly formed squad in vol. 1 #5 (December 1991), becoming a core member under his leadership and appearing regularly through issues #1–15 of the series. Her integration into the team highlighted her sonic abilities in support roles during missions, solidifying her position as a deputy leader figure amid the group's paramilitary dynamics. Key early storylines establishing her role included #4–6 (November 1991–January 1992), where she participated in confrontations against the Brotherhood of Evil Mutants, including , , and , demonstrating her tactical contributions to the team's aggressive combat style. Siryn's prominence grew through major crossovers, notably her involvement in the 1991–1992 "X-Cutioner's Song" event, spanning X-Force #16–18, where X-Force allied uneasily with X-Men and X-Factor teams against Stryfe's terrorist plots, underscoring her role in high-stakes mutant conflicts. She also featured in expanded narratives like Uncanny X-Men Annual #15 (1991), aiding X-Force and the New Warriors against threats on Muir Island tied to Proteus and the Shadow King, and X-Force Annual #1 (1992), which explored alternate-future elements of the Mojoverse connected to Shatterstar's origins. During the 1980s and 1990s, Siryn appeared in over 20 issues across X-Force and related titles, evolving from a peripheral villainous figure to a key player in the X-Men's extended family of teams.

2000s–2010s

In the early 2000s, Siryn joined the branch of , an international mutant relief and response organization, in New X-Men #128 (August 2002), where she reunited with former teammates including Multiple Man and . She continued as a key member during the "X-Corp" storyline, appearing in issues #127–139 (August 2002–June 2003), contributing her sonic abilities to operations amid global mutant crises following the genocide. Siryn transitioned to a prominent role in X-Factor vol. 3, debuting as a core member of in #1 (March 2005), a detective agency led by in Mutant Town, . She featured in over 50 issues through #200 (February 2010), often serving as a field operative and leveraging her investigative skills alongside teammates like , , , and . Key arcs included "The Madrox Prophecies" (#1–6, 2005–2006), where the team confronted prescient threats from Damian Tryp tied to Madrox's duplicates, with Siryn aiding in unraveling corporate manipulations affecting . The series emphasized investigative themes, with Siryn adopting the codename after her father's death and exploring personal dynamics within the team during crossovers like Wolverine: Origins #10 (July 2006), where consulted X-Factor on his past, interacting with Siryn and the group amid revelations about his son . Her tenure highlighted shifts from action in prior stories to detective work, including cases and internal conflicts. Following the core run, Siryn maintained visibility in guest capacities, such as in X-Factor #201–262 (2011), where her arc culminated in a transformative encounter with the Morrigan, granting her enhanced powers while she supported team leadership transitions. This period solidified her evolution into a more mature, leadership-oriented figure in mutant investigative narratives.

2020s

In the 2020s, Siryn's publications have centered on her evolving role within the mutant nation and its aftermath, with appearances totaling approximately 15 issues that highlight themes of mutant identity, , and captivity. She prominently returned as a supporting member of the investigative team in X-Factor vol. 4 #1–10 (July 2020–November 2021), written by Leah Williams with art by David Baldeón and others, where issues #5–9 specifically explored the resurrection of her Morrigan persona amid the broader mutant resurrection protocols. Siryn also appeared in House of X #6 (October 2019) and Powers of X (July–October 2019), integrating her into the foundational era narratives by , though these tie into 2020s storylines through ongoing society developments. Her presence extended to Way of X #1–5 (December 2020–April 2021), written by Si Spurrier with art by Bob Quinn, contributing to examinations of spirituality and on . In 2023, she featured in Uncanny X-Men vol. 6 #6 (November 2024, aligning with post- timelines), alongside and others in a confrontation involving . In 2024, Siryn was depicted as a brainwashed prisoner in Graymalkin Prison in 2024: Blood Hunt/X-Men #1 (May 2024), written by with art by David Marquez, setting up themes of mutant incarceration in the "From the Ashes" era. These limited but impactful roles contrast her more extensive earlier team histories, focusing instead on personal and societal struggles.

Fictional character biography

Early life

Theresa Cassidy was born at Cassidy Keep in , , to Sean Cassidy, a later known as , and his wife Rourke Cassidy. While Sean was away on an undercover assignment for , took the infant Theresa to visit family in , , where was killed in a terrorist bombing; Sean, returning too late, believed both his wife and daughter had perished in the attack. Unbeknownst to him, Theresa survived and was subsequently orphaned. Theresa was taken in by her uncle, Thomas "Black Tom" , Sean's criminal cousin, who raised her as his own niece while concealing her true parentage and involving her in illegal activities during her teenage years. As a teenager, Theresa's abilities emerged, inheriting her father's powers, including the capacity to emit devastating screams capable of shattering objects and generating concussive force. She first demonstrated these powers publicly during a robbery at the alongside Black Tom and the .

Muir Island and X-Force

Following her reunion with her father, the mutant Sean Cassidy (), Theresa Cassidy relocated to the Muir Island Research Center in Scotland, where she came under the guidance of geneticist for training to better control her emerging abilities. There, as part of the facility's community of young s, she formed close friendships, notably with (), while honing her distinctive Irish accent and adopting a vocal style reminiscent of her codename heritage. Siryn's involvement with organized mutant teams began when she and Madrox assisted the New Mutants in locating runaway members and in , leading to a brief stint with the makeshift group before returning to Muir Island. This experience paved the way for her integration into Cable's emerging militant squad, as she officially joined the newly rebranded —formed from the remnants of the —in the aftermath of their battle against her uncle and , starting with X-Force #3 (1991). As a foundational member of , Siryn quickly rose to serve as the team's field leader, coordinating operations under Cable's strategic oversight and emphasizing disciplined paramilitary tactics during their early high-stakes missions. The group clashed repeatedly with the Mutant Liberation Front, a terrorist organization led by the time-displaced villain , in a series of brutal confrontations that tested team cohesion and highlighted internal conflicts over Cable's authoritarian methods, spanning issues from X-Force #1 through #28 (1991–1994). These encounters, including direct assaults on Stryfe's bases and efforts to thwart his anti-human plots, solidified 's reputation as a proactive, no-holds-barred mutant strike force while forging Siryn's leadership amid escalating threats.

X-Corporation

Following her prior service with , Siryn was recruited by Angel to the Mumbai branch of , an international extension of the dedicated to mutant rights advocacy and crisis response worldwide. During her time there, Siryn managed initiatives and engaged in combat amid anti-mutant riots, utilizing her sonic scream to disrupt aggressors and calm volatile situations while promoting dialogue between mutants and human authorities. Her efforts underscored 's mission to protect s on a global scale, blending her combat experience with persuasive communication to mitigate violence and foster understanding. The organization disbanded in the aftermath of the "Eve of Destruction" crossover event, prompting Siryn to relocate to New York. Siryn's involvement with was limited to more than 10 issues across the New X-Men series, highlighting her diplomatic acumen in navigating international tensions rather than frontline battles alone.

X-Factor Investigations

Having previously served with the mutant advocacy group , Siryn transitioned to Jamie Madrox's private detective agency, , debuting as a core member in X-Factor vol. 3 #13 (January 2007). The team operated out of Mutant Town in , taking on gritty cases that often involved elements, such as investigating possessions and vampiric spirit hauntings that affected their clients. Her sonic abilities proved invaluable in these investigations, allowing her to disrupt ethereal entities and extract confessions through hypnotic suggestion derived from her powers. Siryn's tenure with X-Factor Investigations was marked by deepening personal relationships, particularly a romantic entanglement with Madrox and his duplicates, which introduced emotional complexity to the team's dynamics. This subplot intensified in X-Factor vol. 3 #45–50 (February–July 2009), where Siryn discovered she was pregnant with Madrox's child and grappled with the option of amid mounting pressures from anti-mutant threats and internal team conflicts. The narrative explored her and resilience, highlighting the personal toll of mutant life while she balanced agency duties. As threats escalated, Siryn participated in battles against the interdimensional assassin Spiral and various anti-mutant factions during the prelude to the "Second Coming" event in 2009. These confrontations underscored the agency's shift toward high-stakes defense of mutantkind, contrasting its earlier focus on routine detective work. persisted through X-Factor vol. 3 #200 (April 2010), during which Siryn amassed over 100 appearances across the series, depicting her evolution from mourning her father Banshee's death to emerging as a steadfast operative adept at both combat and interpersonal mediation.

Key events: Messiah Complex to Divided We Stand

During the "" crossover event in 2007–2008, Siryn played a key role in ' efforts to locate the first mutant child born since the decimation of mutantkind in "," amid conflicts with the Purifiers and other threats. She coordinated with teammates like and during infiltration missions against the Purifiers, driving support operations and communicating with Cyclops to relay critical updates on their progress. Her involvement extended to responding to distress calls from vulnerable mutants, such as the informant , though these efforts often intersected with deadly encounters involving Predator X, heightening the stakes for the team. These battles against the Purifiers, spanning multiple issues of X-Factor (vol. 3) #25–27 and related titles, underscored Siryn's commitment to protecting mutantkind during a period of , while she grappled with personal uncertainties including her undisclosed pregnancy. In the aftermath of "," the "Divided We Stand" storyline in 2008 addressed the lingering fears of depowerment from M-Day, with anti-mutant sentiment surging and former mutants targeted by groups like the Sapien League. Siryn, now visibly pregnant with Jamie Madrox's child, joined X-Factor in safeguarding hidden mutants in Mutant Town, , where they confronted Arcade's deadly games designed to exploit post-M-Day vulnerabilities. Her sonic abilities proved vital in quick-response rescues, such as aiding a comedian under attack and supporting team efforts to evacuate civilians from traps, emphasizing themes of resilience amid widespread mutant persecution. These events, detailed across X-Factor (vol. 3) #28–32 and tie-ins, highlighted Siryn's protective instincts as she balanced her agency's investigative work with the broader fight for mutant survival, all while navigating the emotional weight of her impending motherhood. The traumatic birth of her son in X-Factor (vol. 3) #38 in 2008 triggered a severe into for Siryn, as the —revealed to be a duplicate of Madrox—was reabsorbed into him, leaving her devastated and questioning her . This loss exacerbated her existing struggles with and trauma, leading to isolated drinking episodes that strained team dynamics in issues #39–44. By X-Factor (vol. 3) #45–50 in 2009, Siryn confronted her head-on during a return to , where she poured out her flask at her mother's grave and sought support from Warpath, marking a pivotal step toward sobriety and personal . Her journey emphasized through , as she rebuilt her emotional strength while continuing X-Factor operations. Amid these personal challenges, Siryn contributed to the "Necrosha" event in 2009, where and Eli resurrected deceased mutants, including her father , as part of a techno-organic virus-fueled assault on the . aided the broader mutant response against Selene's undead forces, with Siryn's involvement focusing on countering the chaos caused by her father's unwilling return, spanning conflicts in , , and related titles over more than 20 issues. These battles reinforced themes of recovery, as Siryn helped neutralize the threat while processing family ties twisted by , ultimately contributing to the downfall of Selene's scheme.

Leadership in X-Factor and the Morrigan

Following Madrox's departure from in X-Factor #200 (June 2010), Siryn assumed leadership of the team, stepping up to guide the remaining members amid ongoing mutant-related investigations and personal turmoil. Her tenure as leader began during a period of instability, as the team navigated internal conflicts and external threats, including the crossover event "," where Siryn coordinated efforts to protect young mutants from pursuers. Under Siryn's command, X-Factor delved into the "Laughing Alliance" arc, confronting a network of manipulative adversaries who exploited chaos for gain, testing the team's cohesion and Siryn's strategic decision-making. This storyline highlighted her growth as a leader, as she balanced her lingering grief over recent losses—such as the presumed death of her father, —with the demands of directing operations against ethically ambiguous foes. Despite challenges like team members' doubts and her own emotional strain, Siryn's abilities and tactical acumen proved in advancing investigations. Siryn's leadership arc took a dramatic turn leading into her apparent death in X-Factor #260 (November 2013), where she sacrificed herself during a climactic confrontation amid the team's final battles against demonic incursions. This event occurred while she was under the influence of the Morrigan, the goddess of war and death, whose of Siryn had begun earlier in X-Factor #244 (September 2012), when she willingly took on the entity's mantle to avert greater catastrophe. As the Morrigan, Siryn's personality merged with the ancient being's insatiable drive for conflict and mortality, granting her enhanced mystical powers beyond her sonic scream, including reality manipulation and avian familiars. In her Morrigan form, Siryn manipulated key events during the "Hell on Earth" storyline spanning X-Factor #250–254 (January–May 2013), orchestrating demonic uprisings and to feed the entity's hunger for death while subtly influencing X-Factor's actions from the shadows. This phase saw her clash with former teammates, using hypnotic suggestions and spectral illusions to sow discord, such as briefly cybernetically enhancing allies before withdrawing support. The arc culminated in escalating infernal threats that forced X-Factor to confront the Morrigan's growing dominance, underscoring themes of and loss of . Her by the Morrigan continued beyond the end of the series.

House of X and Krakoa era

With the establishment of the nation of in 2019, Siryn joined the burgeoning community, where she was restored to her pre-Morrigan form and powers after X-Factor purged the entity from her body in X-Factor (2020) #10. She reunited with her father, , who had also been resurrected, allowing the Cassidy family to live together peacefully on the island. This era marked a shift for Siryn from her previous leadership roles to a more integrated role within the collective society. Siryn made a notable appearance at the inaugural in House of X #6, performing with her sonic abilities to entertain guests from across the . Her act symbolized the cultural and social integration of mutants into a sovereign nation, showcasing Krakoa's vibrancy and openness to diplomacy with humans and other heroes. The event highlighted the optimism of the new era, with Siryn's performance contributing to the festive atmosphere that celebrated mutantkind's independence. As a resident of , Siryn benefited from and participated in the nation's protocols, which relied on the powers of to revive deceased mutants. Detailed in Powers of X #4, these protocols enabled the return of countless mutants, including Siryn herself following prior fatalities, ensuring the community's resilience against threats. Her involvement underscored the protocols' role in fostering a sense of and unity among Krakoa's inhabitants. Siryn featured in the Way of X series (issues #1-5, 2021), where she contributed to explorations of spirituality and existential challenges within . The storyline addressed how mutants grappled with faith, purpose, and the island's metaphysical layers, with Siryn's presence helping to navigate these spiritual issues amid the nation's growth. Her role emphasized the need for emotional and philosophical support in the utopian society. While her activities were largely non-combat during 's height, Siryn provided aid during the "" tournament in 2020, supporting the initial mission tied to her father's involvement and the broader defense of the nation. This limited engagement reflected her selective participation in conflicts, prioritizing communal harmony. Over the era, she appeared in more than 15 issues connected to , reinforcing her status as a steady resident amid the evolving landscape.

Post-Krakoa developments

Following the Fall of X event, which concluded the era in 2024, Siryn was captured by anti- forces and imprisoned in Graymalkin Prison, a facility operated by sympathizers. There, she was depicted in restraints alongside other inmates like the , highlighting the facility's role in subjugating former residents. Under the influence of prison warden Dr. Corina Ellis, an operative, Siryn underwent brainwashing that compelled her to serve as a , turning her against her own kind. This manipulation was evident in her forced participation in mutant hunts, where she joined the and in attempting to capture during an assault on a mutant safehouse. Her actions underscored themes of lost autonomy, as her sonic powers—once a symbol of mutant solidarity—were weaponized to enforce Orchis's agenda of mutant suppression. Siryn's post-Krakoa appearances extend across at least five titles, including the 2024: Blood Hunt/X-Men one-shot and multiple issues of (vol. 6), where her coerced role as a hunter deepened the narrative exploration of control and identity. Ongoing storylines in (2024–2025) hint at a potential redemption arc, with subtle indications that her may fracture under external pressures from the , offering hope for reclaiming her agency amid the broader mutant resistance.

Powers and abilities

Powers

Siryn possesses mutant abilities centered on sonic manipulation, inherited from her father, the mutant known as . These powers stem from superhumanly enhanced lungs, vocal cords, and inner ears, allowing her to generate and control sound waves with exceptional precision and intensity. Her primary power is the sonic scream, which enables her to produce hypersonic pitches that disorient and incapacitate foes by overwhelming their auditory senses and equilibrium. By directing focused sonic waves downward, she achieves propulsion for flight, reaching speeds sufficient for aerial combat and evasion. Additionally, she can channel her scream into concussive blasts capable of shattering objects or repelling enemies at considerable distances. Complementing this, Siryn's song utilizes subtle vocal modulations to exert hypnotic influence, compelling targets to perform actions, reveal secrets, or enter a trance-like state, often drawing from mythological lore in its application. Her enhanced hearing grants acute sensitivity to vibrations, facilitating echolocation for navigation in low-visibility environments, while her adaptable permit precise of various languages and dialects, aiding in or communication. These abilities are not without constraints; excessive or prolonged exertion strains her , potentially causing temporary or lasting damage that impairs her powers. Furthermore, her sonic-based mutations require a medium for , rendering them ineffective in vacuums or similar soundless voids.

Abilities and equipment

Siryn is an expert hand-to-hand combatant, having received rigorous training from during her time with . This training emphasized tactical discipline and integration of her skills with , allowing her to contribute effectively in high-stakes missions against threats like the Mutant Liberation Front. In her role with , Siryn honed her skills as a skilled and interrogator, utilizing keen observational abilities and persuasive techniques to uncover clues in complex cases involving mutant rights and supernatural elements. Her interrogative prowess proved instrumental in resolving investigations, such as those tied to the event and corporate conspiracies targeting mutants. Siryn is multilingual, fluent in English and from her upbringing in Ireland, and capable of mimicking several other languages through practiced vocal control developed during her adventures. Following severe injuries sustained in the crossover in 2008, Siryn was equipped with cybernetic legs that provided enhanced mobility, enabling her to maintain operational effectiveness despite the trauma from Purifier attacks. She has occasionally employed amplifiers as equipment to augment her vocal capabilities in field operations, though these are used sparingly in favor of her natural talents.

Reception

Critical reception

Siryn has been ranked among the best female characters for her powers inherited from her father and her roles in teams like . In reviews of X-Factor vol. 3, Siryn's romance subplots with drew criticism for feeling underdeveloped and rushed, often overshadowed by the series' ensemble focus on detective work and politics. This left her romantic arc feeling secondary to the broader narrative, limiting character depth despite the book's overall acclaim for humor and pacing. Siryn received positive in the era, initiated by House of X in 2019, for adding cultural depth through her Irish roots and ties to , especially in X-Factor's exploration of cycles and the Morrigan entity. Reviews commended how her storyline reclaimed agency from , enriching society's themes of and in a post-human conflict world. This portrayal was seen as a nod to underrepresented ethnic dimensions within the . Overall, Siryn's innovative powers and versatile team contributions earned her a ranking of 47th in 's 2011 X-Men Face-Off poll, placing her among notable for her unique auditory manipulations and enduring presence across , , and beyond.

Cultural impact

Siryn's heritage has resonated strongly with fans, who appreciate her representation of within the mutant community, often emphasizing her accent and background in fan activities. has officially highlighted this aspect through features like the 2019 article, which traces her journey and celebrates her as a symbol of superhero legacy. This appreciation extends to at conventions, where enthusiasts recreate her iconic look to honor her roots, as seen at events like the Garden State Comic Fest. As a member of X-Factor, Siryn contributes to the team's portrayal of mutant diversity, which has been interpreted through LGBTQ+ lenses in analyses of the series during the 2010s. The 2020 X-Factor relaunch assembled a roster with significant LGBTQ+ representation, earning praise for advancing progressive narratives in Marvel comics. Siryn's sonic powers have left a legacy in the depiction of audio-based mutants, influencing the archetype seen in characters like Screaming Mimi, an alias Siryn briefly adopted during an undercover infiltration of Singularity Investigations in X-Factor vol. 3 #11. This connection underscores her role in evolving sonic-powered heroines, blending vulnerability with formidable abilities. Online discussions about Siryn surged following her appearance in the 2024 Blood Hunt event's tie-in issue, where she is depicted as a , sparking speculation on her redemption and reintegration into the universe. These discussions continued into 2025 with her portrayal as a brainwashed and Trustee in Prison under Warden Ellis, as featured in and the "Raid on Graymalkin" crossover ( #7-8 and #8-9), highlighting themes of control, resilience, and liberation.

Other versions

Age of Apocalypse

In the alternate reality of Earth-295, known as the , Siryn's counterpart is a young named Theresa Cassidy, who operates under the codename Sonique. Unaware of her heritage as the daughter of , she resides in a small town targeted by 's forces for human cullings and mutant testing. Captured and placed on a transport train bound for extermination, Sonique is rescued by and his band of Outcasts during a raid on the convoy. Sonique quickly proves her value to the resistance group by manifesting her sonic scream powers for the first time to warn and aid (X-Man) against an attacking Infinite soldier, solidifying her place among the Outcasts. Her abilities, inherited from her father but honed through survival in this dystopian world, are particularly suited for guerrilla tactics, allowing her to disorient enemies and disrupt machinery in hit-and-run operations against Apocalypse's regime. She develops a close companionship with , sharing a romantic bond as they navigate threats, including an encounter with the manipulative Mr. Sinister, whom they initially trust. Sonique's role emphasizes themes of tragic heroism, as she fights alongside the Outcasts to sabotage Apocalypse's facilities, such as destroying a mutant experimentation factory. Her appearances in this timeline include X-Man #1-4 (1995), where she joins the group and confronts assassins sent by Domino. Later, Sonique falls victim to Mr. Sinister's brainwashing and is coerced into joining the , a team assembled to counter Magneto's . Under Sinister's control, she participates in an assault on the at their base, where her sonic blasts contribute to the chaotic battle against heroes like Cyclops and . During the confrontation, she is severely wounded by the but is ultimately freed from the mind control by the efforts. This brief but intense involvement highlights her amplified role in the resistance's desperate struggles, though her sonic powers remain fundamentally unchanged from her mainstream counterpart, focusing on screams that can shatter objects, induce vertigo, and propel flight. She appears in these events in X-Men: #5-6 (1995).)

Ultimate Marvel

In the Ultimate Marvel universe (Earth-1610), Siryn is introduced as Theresa Rourke in Ultimate X-Men #7 (August 2001), depicted without any familial relation to the Cassidy lineage. As a member of the team, she utilizes her sonic-based powers in combat against threats like the , contributing to key team efforts in this reimagined reality. Siryn meets her demise in Ultimate X-Men #78 (January 2007), slain amid the chaos of the "Ultimate War" crossover event. With appearances spanning more than 10 issues across the series, her role emphasizes steadfast team loyalty over extensive or exploration. Her abilities mirror those of her primary counterpart, centered on sonic manipulation for offense and flight.

What If?

Siryn appears in select issues of Marvel's What If? anthology series, which examines hypothetical divergences from established continuity, often showcasing her sonic powers and heroic potential in altered timelines. In What If? vol. 2 #9 (January 1990), titled "What If the Died on Their First Mission?", the narrative diverges when both the original and the All-New, All-Different team are killed during their initial confrontation with the sentient island . Professor Charles Xavier, sensing the tragedy telepathically, is left wracked with guilt, while survives and uses advanced technology to teleport a makeshift team of mutants—including , , , , and —to counter the emerging threat of and his . , unaware until this point of her father 's fate among the fallen, channels her grief into battle, adopting his codename "Banshee" as she unleashes disruptive sonic screams to disorient enemies and support the team's victory. This alternate path positions as a foundational member of a ragtag successor , emphasizing her adaptability and inherited legacy in a world deprived of its classic guardians. Another key appearance spans What If? vol. 2 #46–47 (February–March 1993), in the storyline "What If Destroyed the ?". Here, the point of divergence occurs when , upon arriving in the present, preemptively assassinates , Cyclops, and to avert a perceived future catastrophe, shattering unity and sparking a devastating between factions led by Magneto and human authorities. Sentinels ravage strongholds, resulting in widespread of survivors in concentration camps. Siryn is captured and imprisoned alongside other s, enduring brutal conditions that test her sonic abilities in confined spaces for subtle acts of defiance. She is later liberated during a daring raid orchestrated by , who recognizes her value as a sonic disruptor against Sentinel forces. Joining a reformed roster that includes , , and other freed captives, Siryn contributes to guerrilla strikes aimed at dismantling the camps and rallying scattered s, ultimately aiding in a fragile push toward coexistence. This two-part tale underscores Siryn's endurance amid systemic , portraying her as a vocal symbol of resistance. These limited What If? stories, confined to early 1990s issues, explore Siryn's role in high-stakes alternate histories without delving into broader universe-spanning arcs, focusing instead on her emergence as a pivotal team player in crises born from failures.

In other media

Television

Siryn has not appeared in any animated television series as of 2025. While she has a prominent role in Marvel Comics as a member of teams like , her portrayals have been limited to live-action film cameos, such as in X2: X-Men United (2003), where she is depicted as a at the Xavier Institute using her sonic scream to alert others during an attack. No or episodic roles in shows like Wolverine and the X-Men (2008–2009) or X-Men: Evolution (2000–2003) feature the character, despite the inclusion of related mutants and teams in those productions.

Film and video games

Siryn has appeared in minor roles within the live-action X-Men film franchise, portrayed by actress Shauna Kain. In X2: X-Men United (2003), she is shown as a teenage student at the Xavier Institute for Higher Learning, where she uses her sonic scream to disrupt William Stryker's forces during their raid on the school. This marks her most notable film moment, demonstrating her powers in a brief but action-oriented sequence alongside other young mutants. Kain reprised the role in X-Men: The Last Stand (2006), where Siryn appears as a background student amid the chaos at the institute and during the climactic battle on . Her presence is non-speaking and uncredited in the final cut, serving primarily as an extra to populate the scenes of mutant gatherings. As of November 2025, Siryn has no integration into the and remains absent from major live-action adaptations beyond these early Fox-produced films. Siryn's video game appearances are sparse and typically limited to supporting or collectible roles rather than central narratives. She features as a playable card character in the mobile game X-Men: Battle of the Atom (2014), where her abilities emphasize sonic attacks in team-based card battles against Sentinel forces. These inclusions highlight her sonic powers in cooperative combat mechanics, though she lacks starring roles in console or PC titles focused on X-Men team dynamics.

Merchandise

Siryn has been featured in a range of collectible merchandise, reflecting her role in and storylines. Action figures include the 6-inch Series figure released by in 2022 as part of the Build-A-Figure wave, depicting her in a classic green with a removable cape accessory and alternate hands. This figure emphasizes her sonic powers and aerial mobility, contributing to fan collections of 1990s characters. Earlier representations are limited, with no verified release from 2005, though team-themed assortments from that era indirectly supported her popularity. In the miniature gaming space, Siryn appears as an uncommon figure (#027) in ' 2011 Marvel set, sculpted at 1:1 with a dial tracking her combat stats from 86 points down to primary attack values focused on disruption. She also features in the 2011 set as #028, an 86-point with abilities like scream for area effects. Collectible statues include the hand-painted lead figurine from Eaglemoss Publications' , issue #159, standing approximately 3.5 inches tall and based on her design with red hair and wings; solicited in 2011 and accompanied by a profile . Siryn's appearances in trading cards span decades, with early examples like the 1992 Impel Series 3 #60 base showcasing her debut-era and powers . Later sets include the 2011 Hero Attax #104, part of a foil variant lineup highlighting members. A Siryn appears in the 2023 Upper Deck Beginnings Volume 2 Series 2 set as #167, part of a red parallel variant. No specific Siryn from the 2007 Upper Deck VS System set has been documented in available checklists. Apparel and posters from the capitalized on X-Force's popularity, with promotional items like the 1991 Marvel Comics 14x22-inch vintage poster featuring team artwork that included Siryn alongside and Domino. In the 2020s, amid the era's revival of mutant themes, general apparel lines have incorporated motifs, though Siryn-specific items remain scarce beyond fan customs.

References

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    Notes: Created by Chris Claremont and Steve Leialoha First Appearance in: - As Siryn in Spider-Woman (Marvel, 1978 series) #37 (April 1981) - As Banshee in ...Missing: concept | Show results with:concept<|control11|><|separator|>
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