Bad Total Drama characters: 
Amy
Beardo (he is average and not bad as the others)
Bridgette (Action)
Chris Mclean (Seasons 4-6)
Courtney (depending your view)
Dave (Episodes 6-13)
Duncan (Seasons 3-5)
Ellody & Mary
Eva (depending your view)
Gwen (Second half of World Tour and All Stars)
Jacques & Josee
Justin (Action)
Laurie & Miles (depending your view)
Leonard
Lightning (All Stars)
Mike (All Stars)
Owen (Action)
Rodney
Sierra (All Stars)
Sky (Post-merge)
Staci
Stephanie
Sugar
Tammy
Taylor (depending your view)
Topher
Trent (Action)
Zoey (All Stars)