Margaret is a dog, the mother of Jake, Finn, and Jermaine. The couple first appeared in one of Finn's flashbacks in the episode "Memories of Boom Boom Mountain." They find Finn after he has soiled himself, causing him to be stuck to a leaf, and cried for an entire day, all alone in the forest. They are the first and only people to stop and help baby Finn, as all other passersby simply ignored him. Margaret appears to be caring and loving. She speaks in a 1940s American accent.