Nemesis Kid vs ANYBODY 1 on 1

Recently I've been thinking of just how awesome this guy should have been.I'm starting to wonder who could beat this guy 1 on 1 . The only ones that I can think of that would have a chance would be

Triplicate Girl, Multiple Man, Duplicate Man. Who else ?

What can he do? The only thing I know about him is that he somehow owned and killinated Karate Kid, who is easily a mid-level cosmic being...

He had the power to defeat any foe 1 on 1 no matter what their power was.His only weakness was that he could only use his power on 1 person at a time.

thats a weird power

it must take some creative writing

Princess P tore him a new one he is not as great as he sounds trust me. He was a legionairre originally.