"Scrap Iron" Adam Pearce
I mean, look at this guy. He's got a gimmick that doesn't go with his look. He's got the standard buzzcut/goatee combo that all dudes (myself included) rock, but he's wearing an 80's throwback robe. His presentation is just a mess. Is he good in the ring? Hell if I know. His look/gimmick combo alone earns him the title of The Worst.
Photo credit: ObsessedWithWrestling.com