The Penguins meet Roger in the episode, "Haunted Habitat" and Over the Hedge (mentioned) when Skipper and Marlene go to investigate in the sewer under Marlene's habitat, because of a strange sound.
Roger is from Florida (as revealed in Haunted Habitat).
Roger appears the second time in "Roger Dodger" when the Sewer Rats terrorize him.
Roger has green and baige skin.
Roger lived in the sewer until he was brought to the Central Park Zoo.
He is voiced by Richard Kind.