Let's see... I have a lot of POWER and I'm a MAN. *Lightbulb of inspiration* I am... POWERMAN! (Yes I know there was a Powerman.)
I am a vigilante, so I will call myself... VIGILANTE! (Also a real name)
And my favorite stupid name; I use my powers to LOOT from banks. I am THE LOOTER! (I'm not kidding, people.)
Still, some names must lead to some strange conversations:
Grunt: Boss, Green Arrow showed up, and he's shooting arrows at us!
Boss: Well, duuuuuuh! What did you think a guy named Green Arrow would shoot?
Criminal: I'm in a web! Spiderman put me here!
Cop: A guy gets caught in a web? Gee, who else could have put you there, The freakin' Hulk?
Human Torch: I'm the Human Torch! FLAME ON! *Catches fire*
Minion 1: Oh my god! He burst into flames!
Minion 2: His name is the HUMAN TORCH! What the hell did you THINK he was gonna do?