User blog comment:Artemis Thorson/Marvel: Injustice/@comment-4772145-20130113150251/@comment-4772145-20130115210030

I know what you mean, and I was debating it by myself while preparing the DLC Packs, but the reason of why they're separate characters is simple: Movesets. They'll just get similar yet different movesets depending on their abilities like Skaar's sword, Abomination's larger physique or Red Hulk's energy drain

It's the same reason why I put Scarlet Spider, Ultimate Spidey and Spidey 2099 as different characters, since they're regularly just alternate costumes, there can be new movesets depending of their abilities like Kaine's stingers, Miguel's claws or Miles' venom blast and cloaking

And thanks, to think I left behind LOTS of costumes and a few characters as well