Pumpo was tested on by the lab only eating pumpkin causing his head to become a pumpkin even tho he don't speak he will use sign language, the lab  fused him with bat getting rid of both his arms and legs re place with bat wings they also drew a large permanent yellow X on his body, after this he escaped and brunt the lab , after burning the lab het got a house and a farm with a barn and started farming but a creature called "darken lives in the forest and would kill pumpo if it saw them"