|Latest appearance||"All the Little People"(as a toy)|
|Voiced by||Kevin Michael Richardson|
Donny is a grass ogre who appears in the episode "Donny," in which he moves in the Tree Fort with Finn and Jake. He originally had a destructive personality, as he was seen terrorizing House People near the beginning of the episode. Jake influenced Donny by teaching him the Empathy Song and other musical lessons and he eventually became kind and civilized. However, Finn discovers that the Obnoxygen gas that Donny produces when he's being a jerk is the only thing that protects the House People from being eaten by the Why-Wolves, and so Finn has to anger and discourage Donny's talent so he will revert into jerk Donny. He succeeds in doing this by making fun of Donny's songs. It is shown that Donny may be able to play the cello. It is also implied that Donny still likes Finn as he said, "I'll never forget you."
Finn and Jake aren't likely to hang out with him that much anymore.
Donny is a light green Ogre, and his body is partially covered with leaves, with one prominent leaf covering his crotch. For his face, only the eyes, mouth, and (sometimes) red cheeks are visible, but, in his "jerk state," his eyes bulge out. Later in the episode, he wears blue jeans and a very large belt.
- "All the Little People" (as a toy)
- After Jake teaches him not to be a jerk, his eyes are less bulged and closer together.
- When Donny is seen with Jake, he is holding a cello.