Dumpy Muffins is a small, pink octopus. He is a hall monitor, like Clamantha and Jumbo Shrimp. Dumpy remained as a nameless background character until the Season 2 episode, "Milo on the Lam", where he worked with Clamantha to bring Milo to detention when everyone thought he glued Mr. Baldwin to his chair. When Milo started to protest that he did not do it, Dumpy held his arms behind his back so he would not escape. Later, when Clamantha and the other hall monitors were chasing Milo, Dumpy was looking at Oscar, who told Dumpy to stop staring at him ("Milo on the Lam").