A Pooka is a mischievous spirit from Irish folklore that is often portrayed as taking the form of an animal, such as a rabbit or a horse. It is known for playing tricks on humans and is associated with the Otherworld, a realm of magic and mystery in Irish mythology. In some stories, the Pooka is said to be a benign but mischievous presence, while in others, it is portrayed as more malevolent, with the ability to bring harm to those who cross its path. The Pooka is also known to have the power of human speech and enjoys creating havoc and mischief. In Ireland, the Pooka is the most feared Faerie, possibly because it appears only at night and enjoys creating chaos. However, there are no recorded incidences of a Pooka actually causing harm to humans. The Pooka has made it into many books and films, with one of the most famous being Harvey, the six-foot white rabbit from the play by Mary Chase. In popular culture, the Pooka has been depicted in various forms, including as a rabbit-like humanoid creature in the video game Odin Sphere. The Pooka is also associated with fertility traditions in Celtic culture, where the rabbit is an ancient symbol of fecundity.