Fiona Foxwas originally one of the many victims ofDr. Ivo Robotnik's rise to power. As a child she was left in prison, accidentally abandoned bySonic the HedgehogandMighty the Armadillo, resulting in a grudge held against them. Upon escaping, Fiona led a life of treasure hunting and other petty crimes until, following Sonic's apparent death, she attempted to turn over a new leaf by joining theKnothole Freedom Fighters. In time, however, Fiona gravitated back towards her old ways, and ultimately decided that she preferred the darker side of life. To this end, Fiona fell in love with Sonic'sMoebiuscounterpart,Scourge the Hedgehog, becoming his girlfriend, and later Queen of Moebius itself following Scourge's takeover. As a member of theSuppression Squad, she took part in the invasion ofMobius Prime, but following the rest of the Suppression Squad's mutiny against her and Scourge, she fled the scene, only to hire what was left of theDestructixand later rejoin her boyfriend.