Not to versed in the ways of bonnie and clyde, but that still sounds like a good idea. ^^
Rock is definitely a likable character, no matter what role he's cast in. He's a very impressive, [somewhat] flexible character.
I think Sapphire in a villains role would be neat. I haven't been able to get my hands on anything that has her in a major role, but I have seen her in a few minor appearences in Black Jack (Mainly a school teacher).
....(ノ◕ヮ◕)ノ*:・゚✧ ☆Wanna-be mermaid since 1994☆ (ノ◕ヮ◕)ノ*:・゚✧....