Dark Yoshi is an evil Yoshi who is friends with Bowser Jr. He is black colored and has sharp fangs. He appears in Super Mario RPG the quest of koopa as the boss of World 1. He tries to eat Mario and Yoshi with his tongue. Mario has to have Yoshi eat him 3 times. After he is deafeated he say's "You may have won but just you wait! You still have 5 more worlds to go" Then he vanishes.