Mr. Pig

Mr. Pig (voiced by Ron Lynch) is a character who first appears in "Apple Thief." In this episode, he is referred to simply as "Pig" until later in the episode when Tree Trunks calls him "Mr. Pig." In that one, Jaybird orders Finn, Jake, and Tree Trunks to be executed by having the Pig eat them alive. Even though he worked with villains, Pig appears to have a nice personality. He was probably forced to do what he did, as he said, "they're making me do this." He has a developed an acute sense of hearing, shown when he identified Tree Trunks' lost apples by their "sound." This is fitting since pigs in real life have excellent hearing. As a result, he was very helpful to Tree Trunks, Finn, and Jake. He's also seen in "Holly Jolly Secrets Part II," when Tree Trunks is walking up to him. In "Dream of Love" he starts a romantic relationship with Tree Trunks and the two marry in "Apple Wedding." In "Escape from the Citadel," Tree Trunks begins to suggest she and Mr. Pig get a "di—" when the doorbell rings. They open the door to find The Lich, now a giant baby, and Tree Trunks joyfully exclaims that this "changes everything. They adopted the Lich baby and named him "Sweet Pig-Trunk" or Sweet P for short.