Blue Sky Studios is an American computer animation film studio based in Greenwich, Connecticut. It is a subsidiary of 20th Century Fox Animation, and a division of Walt Disney Studios, owned by The Walt Disney Company. The studio was founded in 1987 by Chris Wedge, Michael Ferraro, Carl Ludwig, Alison Brown, David Brown, and Eugene Troubetzkoy after the company they worked in, MAGI, one of the visual effects studios behind "Tron", shut down. Using its in-house rendering software, the studio had worked on visual effects for commercials and films before completely dedicating itself to animated film production in 2002 starting with the release of "Ice Age" by 20th Century Fox. "Ice Age" and "Rio" are the studio's most successful franchises, while "Dr. Seuss' Horton Hears a Who!" and "The Peanuts Movie" are its most critically acclaimed films. As of 2013, Scrat, a character from the "Ice Age" films, is the studio's mascot.