Inspired by the odd tv pairs and firsts threads... Anyone know where this concept started? The oldest example I can think of is Superman/Bizarro. Superman/Bizarro Star Trek's Mirror Mirror Universe Scrooge McDuck/Flintheart Glomgold Spider-Man/Venom Darkwing Duck/Negaduck Bobby's World Howie Mandell/Deal Or No Deal Howie Mandell list more
Seinfeld gang and Bizarro Seinfeld gang. Although it's the regulars who would be considered the "evil" twins.
Stromile Swift/Stromile Swift. EDIT: Was there really a bizarro Superman? I thought that was just a Seinfeld thing.
Adam Chandler/Stuart Chandler Link/Dark Link Optimus Prime/Scourge Captain Planet/Captain Pollution Luigi/Waluigi Eric Cartman/Evil twin from another dimension Homer Simpson/Hugo Simpson
I remember having to fight your doppelganger in Castlevania: Symphony of the Night. That dude wasn't easy, either...