Terrible Trio/Western Animation


 * Ed, Edd n Eddy:
 * The Eds, in the eyes of the cul-de-sac kids, they definitely are.
 * The Kanker Sisters, especially when they destroy the cul-de-sac trying to find their heirloom, the Ship-Inna-Bottle.
 * My Little Pony: The Movie (1986) features the Wicked Witch Hydia and her two daughters Reeka and Draggle.
 * My Little Pony: Friendship Is Magic has the Diamond Dogs from the episode "A Dog and Pony Show", which are led by such a trio. Word of God says their names are Fido (the hulking one), Rover (the tall, skinny one) and Spot (the short one).
 * "The Ending of the End" (both parts) involves Chrysalis, Tirek, and Cozy Glow presenting the Mane Six with their true Final Battle. And it is brutal.
 * Darrell, Shannon and Jethro from OK K.O.! Let's Be Heroes.
 * The Powerpuff Girls:
 * The Amoeba Boys. Even if they aren't that terrible...
 * Also the Ministry of Pain, consisting of Mastermind, Counterpart and Cohort.
 * And the Rowdyruff Boys.