The Griskins are a ghostly tribe of Teensies who haunt the Land of the Livid Dead, a location visited in Rayman 3: Hoodlum Havoc. The Griskins have also been referred to as Mad Spirits, or the Livid Dead.

A Griskin in the Land of the Livid Dead, attacking a Hoodboom
The mystic Griskins weren't always ghosts. Once, their tribe roamed the Moor and performed their incantations freely. But the Great Spirit Palmito was aggravated by all the racket, so he turned the Griskins into ghosts and confined them to a great tower where their singing wouldn't wake up any more spirits.
—Press release, Rayman 3: Hoodlum Havoc [1]

At least some Griskins have the ability to generate and manipulate lightning; when Rayman releases a group of Griskins from Palmito's tower in the third part of the level, they reward him by electrocuting two Hoodbooms and a Hoodmonger that were about to attack him.

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