Captain Gelatin
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Captain Gelatin is a superhero on a TV show from Pajama Sam 2: Thunder and Lightning Aren't So Frightening. He works with Milkman and Hero Sandwich.

He tells Earthquaker to stop the evil-doing but gets shaken with Hero Sandwich, Milkman and Clementine in the intro and was later rescued by pajama man after he did medical help on him in the end credits.