Souffle is a male sea serpent from Castle Roogna in Xanth. He was first introduced in Question Quest.
Souffle is the husband of Sesame and father of Serendipity.
Souffle is the moat monster of Castle Roogna and sometime baby-sitter.
Novels: Question Quest, Demons Don't Dream, Roc and a Hard Place, Yon Ill Wind, Faun and Games, Zombie Lover, The Dastard, Swell Foop, Up in a Heaval, Cube Route, Currant Events, Pet Peeve, Stork Naked, Two to the Fifth, Knot Gneiss, Luck of the Draw