Goddess of Victory
Johan

2
Johan used to be a commander in the Ark since its early days, graduating at the top of his class and being the first to suggest guerilla warfare tactics for Nikkes and commanders. His example was used by the Central Government as justification for continuing the human commander program, which otherwise had high failure rates and commensurate fatalities.
Johan went on to become a rising star and a 'celebrity' amongst the people known as "New Hope," even participating in the Second Surface Reclamation War 60 years before the start of canon. However, on an unspecified mission, Johan suffered severe injuries and was falsely imprisoned on charges of treason. Between the betrayal and injuries, Johan left the Ark behind and one way or another ended up in Eden, receiving treatment and cybernetic enhancements.
As far as the official records say, Johan died of gunshot wounds from his escape attempt. Needless to say, reports of his demise were greatly exaggerated.