Flip is a character in the comic strip Little Nemo in Slumberland. He is the son of the Sun, and the nephew of the Dawn, but he is something of a ne'er-do-well, and is more or less an outcast: the residents of Slumberland want nothing to do with him. In his earliest appearances, he spends his time in Slumberland vying with Nemo for the Princess' attentions, unafraid to play dirty. As the strip progresses, Flip evolves from Nemo's nemesis to tolerated companion to his close friend, and becomes one of the strip's livelier (albeit still troublesome) characters.
Flip is shown as a cigar-smoking, green-faced dwarf with a receding hairline, but it is unclear whether he is a small adult or a child. Nemo refers to Flip as a "boy," apparently without irony, on several occasions, but in episodes published in 1908 and 1913 Flip claims to be 23 years old. (On the other hand, Flip is an incurable liar and braggart, so it is wise to take anything he says with a grain of salt.) Flip's customary clownish attire gives him a rotund appearance, but in a state of undress − in bathing costume, for example, or wrapped in a towel at a spa − we see that he is not really stout at all.
In the movie Little Nemo: Adventures in Slumberland, Flip is portrayed as a mischief maker, much like in the comics. He is not really seen as an enemy toward Nemo but isn't liked by most of Slumberland. He is voiced by Mickey Rooney.
In the film he is lively and fun-loving, whereas in the original strip he was more of a moody, cynical disposition.
Though maybe not seen as an enemy, he is portrayed as more of a bad influence toward Nemo which eventually ends up with Flip influencing Nemo to opening the forbidden door which releases the Nightmare King. Though he did not know what was behind the forbidden door, Flip corrects his wrong doing by joining Nemo in a rescue attempt to get King Morpheus back from Nightmare Land and by helping Nemo and the group find Nightmare Land with a special map of his.
He is last seen in the movie on his giant flying crow Flap, saying good-bye to Nemo and the Princess as they depart Slumberland in the King's dirigible.
In the Nintendo game Little Nemo: The Dream Master, Flip makes a brief appearance in the first level, the Mushroom Forest. His colour scheme is different from both the comic and movie incarnations, and he is not shown with his trademark cigar.