Adventure Time Super Fans Wiki

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Dr. J is the leader of the gang that opposes Jaybird's gang in the episode "Apple Thief." When Finn, Jake, and Tree Trunks meet Jaybird, he thinks that they work for Dr. J. Right before Jaybird fed Finn and the others to Pig, Dr. J and his gang shows up, and Finn, Jake, Tree Trunks, along with Pig, escape during the fight.