Ah, freedom force.
I only played the first one, but it was great, and very superhero-ish.
The entire game looks like a comic book, and has visual sound effects even! (If I remember right)
Like POW! and KAPOW! etc.
Yes, you can customize characters. Well in the first one you could, dunno about the Reich one.
You could also demolish entire buildings, superjump, wield scenery objects (bench, phone booth, etc), and throw them and stuff.
I highly recommend the first one too