Diddy

“Tell me about it! After what Koopa said, I’m feeling like a real jerk.” — Diddy, The Aftermath: The Final Party
Diddy was a contestant on Total Drama Mushroom Island as a member of the Killer Mushrooms. His bad attitude didn't take him far, as he was eliminated fairly early. He is currently the only original contestant to not compete in either of the two subsequent seasons, though he appeared as an Aftermath commentator in both.