Xanth is a major demon from Xanth. His talent is making himself and his companion anything the other desires as Nimby, otherwise he can do anything. He was first introduced in The Source of Magic.
Xanth is the husband of Chlorine and father of Nimbus.
Xanth is the source of magic for the land of Xanth. He lived in a deep cavern sealed from intrusion and was guarded by the Brain Coral. His body has leaked a trace amount of magic which is accountable for all the magic in Xanth. He was freed by Bink, and for that service, all of Bink's descendants will be Magicians. Later, Grundy teaches him how to play to win. He takes human form as Nimby (Not In My Back Yard) that is a Dragon Ass, a donkey headed dragon. As Nimby, he fell in love with Chlorine. Breanna taught him how to dream. He switched bodies with Edsel to visit Mundania, and Dug and Kim were his and Chlorine's companions. His name is stylized as X(A/N)TH.
Novels: The Source of Magic, Dragon on a Pedestal, Golem in the Gears, Heaven Cent, Question Quest, Demons Don't Dream, Harpy Thyme, Geis of the Gargoyle, Roc and a Hard Place, Yon Ill Wind, Zombie Lover, Xone of Contention, Swell Foop, Up in a Heaval, Cube Route, Stork Naked, Air Apparent, Two to the Fifth, Knot Gneiss, Well-Tempered Clavicle, Luck of the Draw, Esrever Doom, Board Stiff, Five Portraits, Isis Orb, Ghost Writer in the Sky, Fire Sail