I'm thinking of using this theme next time I play in an Unrestricted tournament.
Here's who qualifies for a spot on the team:
If you use the Vet. Two-Face, Vet. Doom, Vet. Metamorpho and the Joker from the Icons starter set; toss in a Rookie Doombot for mastermind fodder; put Trick Shot on Jonah and Fortitude on Doom-- then you have a 499 point team. But I have a feeling I'm forgetting some characters who could fit on this team.