[@Eviledd1984]: Well, putting aside how placing the onus on the GM to study twelve characters from twelve franchises is a bit rough (to put things lightly)...

I think that the only ones workable off that list are Siegfried and Jotaro (maybe?), as a majority of that list otherwise is either "normal person with guns", "normal person", or "too insane/insanely strong to function in context of the world without heavily altering their powerset".

Even then, Jotaro's iffy because Star Platinum the World is... Not something I will ever willingly consider. Then there's all the other crazy stuff that Star Platinum can do normally, and well... Problems can arise if he isn't pulled in line.