Compost

Compost is a teenager and an animal rights activist.

History
He and his partner Solar Panel helped Bart and Lisa break into Abbattoir & Costello LLC. to rescue.

Personality
He and Solar Panel seem to be a bit over the top in their thoughts of life, apologising to "mother fence" after they cut through the fence. They are also probably vegan as they seem to think that "milk is murder" and "cheese is genocide".