FF7: he's a turk. hitman. you know the deal. illegitimate son wants his father dead. proves to be an asset to shinra through bloodshed. he's usually on cleanup duty.
NG+: after his death in shido's palace, akechi wakes up at the beginning of the year again. he retains memories of the passed year and has to navigate yaldabaoth's game again. this time he approaches the phantom thieves differently.
P5ROYAL: akechi is a a figment of joker's cognition and wishes to return back to limbo. he has a month to live in this manipulated reality. he will stop at nothing to ensure he remains dead.
ROLE REVERSAL: joker and akechi swap roles. basically. i'll write more later.
ALT: akechi escapes shido's palace alive. joker finds him in the velvet room when the phantom thieves vanish from reality. he helps them defeat yaldabaoth , then maruki. akechi will leave the city after the year is over , in search of a new life without a blood-filled purpose.
PERSONA 3: akechi is a member of strega that infiltrates and spies on S.E.E.S.
PERSONA 4: akechi is a young detective and is fueled by his desires of revenge. he uses the the tv to help solve his own cases and pretend to be the best detective. his victims are all connected to his father, shido.