Eridan is going to be anti-mutiny, if only because if the initiative loses, he dies and he doesn't want that so same goal different reasons yadda yadda.

Gin is straight up do-whatever-the-fuck-he-feels-like. he might help or hinder anyone depending on how he feels at the time, but in general will let most people go despite being on the police force because policing is too much effort but so is mutiny. his life is hard :(

Lucifer...could be potentially pro-mutiny. He'd be up for sabotaging the anti-mutiny crowd here and there to see how the mutiny itself gets on, but never directly confronting anyone because that's not his thing. expect mysterious goings-on inflicted by an enigmatic suit dude