So, it doesn't take place in any particular TMNT universe... I'm not sure if that means they are going to have supporting characters from all over or just Eastman and Laird's TMNT.  What the heck, name some characters you would like to see in the game.

Casey Jones

Baxter Stockman

Usagi Yojimbo

Mona Lisa (yeah, yeah, I know she was only in one episode.)

Kirai

+the entire cast of Tournament Fighters

I'd be happy with the Rat King, Baxter Stockman, Leatherhead, and Napoleon Bonafrog, but my secret dream would be Keno from Secret of the Ooze, so I could pretend I'm playing a Surf Ninjas video game.

Karai, Venus and April........some dames from TMNT.

Donatello

Armaggon
Bloodsucker
Metalhead
Lord Dregg
Slash

There's too many more to name.

Yeah, Metalhead will probably make the cut in the real game or at least a version of him.

Rubang knows how to get me going... Rat King, oh yeah, and you wonder why I love you.

 Nah, he'd just be a Michelangelo clone

I've never doubted why you love me steven.

Now that we're on the topic of the Rat King, why oh why didn't I think of him before Halloween? I could just put some rags and toy rats all over myself, and talk like him for a week. I should really do that next year. I get all my best Halloween ideas right after Halloween and never remember.

That would have been a hit, I ga-raun-tee.