The Kardashev scale : http://en.wikipedia.org/wiki/Kardashev_scale
What categories are these characters or races? The most powerful version of them.
The Federation Star Trek
Galactic Empire Star War
Q from Star Trek
Warhammer 40k. By races.
Thanos just by himself. No, cube, or glove.
Add your own if you wish.
Last thought. When will we, the human race achieve type 1 or 2 status?