Igopogo is a legendary cryptozoological creature which is rumored to dwell in Lake Simcoe, Ontario, Canada. The creature's name is ostensibly based on the Ogopogo, of Lake Okanagan, British Columbia, and also the title 1952 book I Go Pogo, a slogan often mentioned in the comic. It is also called "Kempenfelt Kelly" after the bay that extends from the lake into the city of Barrie, Ontario.
According to legend, the Igopogo is described with a relatively canine-esque head, differing from other well-known cryptozoological creatures. Because of this, many believers have speculated that it is related to such canine-like aquatic animals as the Irish crocodile; also known as the Dobhar-chu. According to eyewitness accounts, the creature has also been seen basking in the sun for extensive periods of time; implying that it is able to breathe air.