Decided to change the last clue a bit:
So far, not so good.
I'm familiar with the power of one.
I may not be The World's Greatest Detective but if there were trouble, I'd have taken your case.
I've been a warm body and a cold corpse and neither's really been my thing.
A true warrior know's it's all over but the shouting...
ANSWER: GUY GARDNER (Guessed by Ken Cox)