Hank was wished up by Timmy presumably to guard his room against intruders. He is also known as "The Horn of Protection", and has a fondness for cheese. He appeared as a minor character in the episode, Cheese & Crockers, and made a cameo appearance in the special, Timmy's Secret Wish!.
Description[]
He is a rhinoceros with a top heavy build that can walk on two legs like a human. He wears a yellow superhero uniform, with an H stamped on it, a cape and underwear over his pants.