Ask The Wammy's

Beyond: Can I help you kill people?

Sure! But as long as you stick to the plan I'll be making soon.
(Near:) When this is over, B, I might end up sending you back to prison.
(Mello:) Meh. As long as he isn't annoying, I'd leave him. After all, he's probably been through a lot to manage to break out of jail.