Ricimer
Ricimer (died 18 August 472) was a Suebian general of partly Visigothic descent who dominated the Western Roman Empire's military and politics as magister militum praesentalis and patrician, installing puppet emperors such as Majorian, Libius Severus, Anthemius, and Olybrius while ruling de facto from the deposition of Avitus in 456 until his death from a hemorrhage.[1][2]
Of noble barbarian lineage—his father a Suebian chief and mother daughter of Visigothic king Wallia—Ricimer entered Roman service early, gaining prominence through naval victories against the Vandals in 456 that temporarily checked their raids on Italy, though a subsequent invasion of Africa failed to dislodge them from Carthage.[3] His Arian Christian faith and non-Roman birth barred him from the imperial throne, leading him to manipulate a succession of weak or short-lived emperors amid ongoing barbarian incursions and internal strife that accelerated the empire's fragmentation.[1] While his alliances, including with Eastern Emperor Leo I to install Anthemius in 467, briefly stabilized affairs and funded anti-Vandal campaigns, Ricimer's eventual revolt against Anthemius in 472 culminated in the sack of Rome and his own demise, paving the way for further instability under his nephew Gundobad.[4]