[quote=@Half Pint]

To be honest, I felt the same way initially! (Especially after rewatching Mutant Mayhem the other night also) But I wasn't sure how to word it within the rules to allow for certain characters but keep it fair when rejecting others.
[/quote]

Wraith touched on this in the "how to be a good GM" post earlier, but whether a concept fits your design for the game is entirely subjective. Its your game. Its your opinion. And it really just needs to be as simple as that.

This applies both to Transformers as to someone reinventing Squirrel Girl as a Green Lantern, who is also an agent of SHIELD, undercover with the Guardians of Galaxy, and the current avatar of the Phoenix Force.