A leprechaun is a type of male fairy, usually taking the form of an old man, clad in a red or green coat, who enjoys partaking in mischief. They are no small than a small child. Some leprechauns are known to hide their treasure, usually in a pot of gold, with invisibility spells. The only way to know the hiding place of one of these troves is for the light at the end of a rainbow to make it visible.

The most famous pot of gold was found by the Second Dungeon Master when he gathered the Treasures of Zork.

Leprechauns are members of the Supernatural and Fantastic Wayfarers Association.

SOURCE(S): The Zork Chronicles, Zork I, Dungeon