Since i noticed these weren't asked, what kinks are Killer and Roullete into and what kind of dom are they?
Killer
Wax play, specifically red wax pouring it over his partner and watching them squirm from the warmth and gasps gets him excited.
Knife play, he’s very skilled with the knife and loves seeing the exhilaration and anticipation in his partners eyes as he holds a knife close to their flesh.
Choking, and getting the control that goes along with it. Watching his partner put complete faith in him makes him go feral
He is definitely a sadist dom. Watching his partner be put in painful situations but trusting that he won’t hurt them too badly is very powerful for him.
Side note I originally thought Killer would have a blood kink but he gets freaked out when MC is covered in blood so I don’t think it would work.
Roulette
Rope play, he loves tying his partner up and he is so good at doing really pretty knots.
Socks, just like his classic counterpart he likes thigh high socks, bonus points if they are blue or black.
Biting, he loves leaving marks all over his partner, it is how he shows others that someone is his. He’s always very strategic where he leaves his bite marks and loves the feeling of his teeth sinking into flesh
He’s more of a soft dom. He can be hard when needed but he prefers to get what he wants through kindness. This doesn’t mean you can walk all over him though, he’s tamed plenty of brats in his time, you just won’t know it’s happening.