((I see a few problems with the RP right from the start:
1) Many favorite anime characters instantly violate Rule #1.
2) Game mechanics are hard / not the best thing to work off of. For instance, do you want to say Gordon Freeman can actually run backwards to climb a ladder, while firing an automatic weapon?
3) I predict this will go as well as using canon Felarya characters that aren't your own for RP activities (see: The RPer's version of the character is used, not the canon).
Maybe instead you can suggest characters based from your favorite anime / videogame universes, with the restriction that they must be worse than named characters who are stated to be the best (and worse than the canon version, not a fanon version). ))