The Grinch is a fictional character created by Dr. Seuss. He first appeared as the main antagonist/protagonist in the 1957 children's book, How the Grinch Stole Christmas!, which was adapted in 1966 into a popular television special, produced by Metro-Goldwyn-Mayer's MGM Animation/Visual Arts studio and directed by Chuck Jones. This was followed by two more television specials, a musical, and a 2000 theatrical film in which the titular character was played by Jim Carrey.
The devious, anti-holiday spirit of the character has led to the name "Grinch" becoming a term used to describe a person opposed to Christmas time celebrations or to someone with a coarse, greedy attitude. The Grinch has since become an icon of the winter holidays, despite the character's hatred of the season, and has appeared on various forms of memorabilia such as Christmas ornaments, plush dolls, Halloween costumes, and various clothing items.
The Grinch only makes appearances in the series' Christmas specials due to the Grinch being a Christmas character.