A friendly and laid-back, green, frog-like creature who serves as the leader of a group of mushroom-like beings known as the "Mushroom People". Donny is known for his easygoing personality and casual approach to life. He often provides guidance and support to Finn and Jake, offering them advice or assistance in various situations. His relaxed demeanor and helpful nature make him a beloved character, adding a touch of warmth and camaraderie to the adventures in the Land of Ooo.