Ufc name

A UFC name is always a name that sounds badass or heroic. You know who "the Truth" and "the Beast from Hell" are, but why isn't there a guy like Rob "da Weasel" Fallon or Brandon "the Propaganda Artist" Verone in the UFC?

Guy1-Tell the truth Brandon what's your real UFC name?
UFC fighter-Brandon "I ain't gonna even gonna lie" Verone
Guy 2-They don't call this guy "the Propaganda artist" for nothing
Brandon- No trust me, that's the name I fight as, Brandon "I Ain't even gonna lie" Verone.
Guy 1 and 2- Bullshit!