My roommate has finally chosen his character, and as I knew he would he, he is playing a character from a Manga. Psyren, I have never read it but I perused wikipedia and found out he has an ability is hard to use is Risus, so he just isn't going to be using that particular ability.
Ageha Yoshina
Psyren (4)
Problem Solver (3)
High Schooler (3)
I haven't read Psyren in a while, but it's certainly an interesting choice for a character to say the least considering they're only a fraction as powerful normally as they are in the post-apocalyptic future they tend to be warped to, which I'm guessing you're not planning to include in the game.
That said, he probably wouldn't even be able to USE his main power in the present, so you'd be completely justified in not allowing him to use it. Even then though, his powers are still crazy flexible even without that, as they can let him enhance his speed, strength, reflexes, ect. as well as some supernatural senses if I remember correctly. You might want to make sure he has clear limits on what his powers will let him do. And for all I know, his abilities may be even more flexible now, as it's the nature of Shonen manga like that to have the main character's power levels constantly increasing at an exponential rate.