Solo Supers

Ok in contrast to my other forum

 http://www.comicvine.com/forums/gen-discussion/1/who-has-held-more-than-one-identity/607176/

I thought i would create a discussion about what 1st, 2nd and height 3rd class DC superheros/villains have only ever had one person representing them

for example: no batman as he has had more than one person wear the cowl.

the only one i can think of is Martian Manhunter.

Who can you guys think of?

Martians Manhunters brother technically  did  pose as him for a bit, infiltrrating the JLA.
But to you question theres  more then ! GL, there has been 3 batmen, quite a few supermen, 4 wonder womans, 4 flashes, therees been I think 6 or  7 captain americas, 3 or 4 spidermans so theres not many big roles that more then one person hasn't filled.

what about green arrow?

oh sorry i didnt know about MMs brother.

what about Captain Marvel?

Oh yeah, sorry i did mean DCs