Margaret is the mother of Jake, Finn, and Jermaine. She first appears in one of Finn's flashbacks in the episode "Memories of Boom Boom Mountain." She and Joshua found Finn after he had soiled himself, causing him to get stuck to a leaf, after he cried for an entire day, all alone in the forest. They were the first and only people to stop and help baby Finn, as all other passersby simply ignored him. She is nearly identical to Jake. They took him to what is presumably their house and raised him as their own. Margaret appears to be caring and loving.