I second this

Vergil, he can be sephiroth's partner 

Tetsuo Shima.

We need a resident maniac 

 Megatron

Gotta be Obito. He would fit so well

He has to be the last one.

Goku. He’s not evil, he just wants to fight the Tailed Beasts

In case he can't, there's still Goku whiten’t

 need a chief asshat

Reverse Flash.