Cap'n Betty only has a major appearance in the episode Monster Hunt. In Monster Hunt, Cap'n Betty helps Jimmy, Carl, and Sheen look for a monster that's been haunting lake retroville. After Hugh Neutron is seen dumping Jimmy's chemical waste into the lake, the monster appears. Carl recognizes the monster at his pet turtle Snappy which Carl had to release here due to being allergic to him. Cap'n Betty is eaten by the turtle, while Jimmy, Carl, and Sheen watch in horror. After Carl manages to get Jimmy's de-mutation pellet down Sanppy's throat, the turtle turns back to normal and spews out Cap'n Betty. Cap'n Betty shows Jimmy, Carl, and Sheen that he is alive, and they paddle to shore.