|Introduced In||Slimy Talk|
Doctor Goo is a character who is first introduced in Slimy Talk. Finn, Jake and Slime Princess come to him to find out what the name is of the kidnapper of Slime Queen, since the kidnapper is a patient in his hospital.
He is one of the few blue slime persons. His head is very weird, as he has many swirls in it. He also wears big round glasses and a white labcoat which has a scientific parasite in it.