Tricksters

The Tricksters are the main antagonists of Amphibia. They are a trio of mysterious yet cold human sorceresses with a strong vendetta against frogs, toads, salamanders, and even humans and planned to exterminate them all to avenge the ones they loved. Widow is the leader and Viper and Birch are her followers.

Trivia

 * They share similarities to Shadow the Hedgehog from Sonic the Hedgehog series. They also share similarities to The Dazzlings from My Little Pony: Friendship is Magic - Equestria Girls: Rainbow Rocks, The Trix from Winx Club, and the Bog King from Strange Magic.
 * They serve as dark parallels to Anne, Sasha, and Marcy.