Johnny hates the Initiative. He's certainly made that known in his time here. However, he has said that they need to work together in order to get this situation under control. It doesn't seem very under control, though, does it? They're even still bringing in new recruits despite having a lack of space and resources... tsk tsk. So I think he'd be on board for this mutiny. He can be on the distraction squad. Or if Chloe and Charlie want someone with super strength helping them in the barricade, count him in for that too.

Elmer doesn't give a damn about much so go ahead and have your little mutiny. Just make sure everyone's smiling by the end, okay? =D He'll be around not help either side, just making sure people are doing alright in his strange little way.

Alucard had been working well with the Initiative so far and won't really like the idea of a mutiny. But if the mutineers are clearly winning this thing, he'll step aside. He's not a coward, he's just practical and will side with whomever wins.