In the World of Greyhawkcampaign setting and the default pantheon of deities for the Dungeons & Dragonsrole-playing game, Olidammara is the god of Music, Revels, Wine, Rogues, Humor, and Tricks. He is often called the Laughing Rogue. He was once transformed into the shape of a small carapaced animal and imprisoned by the mad archmage, Zagyg, but somehow managed to escape.
References
Gygax, Gary. "The Deities and Demigods of the World of Greyhawk." Dragon #70 (TSR, 1983).