Plantain is a tough inmate in whom Banana first encountered. He has a strong disliking of him because that "Plantains and bananas are mortal enemies". Both him and Banana hatch a plan by escaping Jail and head into the swamps. He became so nice by showing Banana the picture of his relatives. Banana hatches another escape plan: they pose as robots in a run down food van called "Robot Tacos", but was later being caught by The Shragger and his policemen. Suddenly, the food van was being magnetized as the chains broke free and Plantain jumps out of the van and bids farewell to Banana.
Plantain is an anthropomorphic banana who is dull yellow in color and has two black spots on his head. He is muscular in physique and has tattoos on both of his arms with a tear tattoo on his right eye. He also wears a sleeveless black and white striped prison shirt and pants.