Mute — Piers Anthony

Mute is science fantasy of mutation and psi: special mental powers. The protagonist, Knot, is a double mutant: he has a physical deformity, and the psi power to make others forget him. He´s satisfied with his life--until the lovely Finesse walks into his life to recruit him for a dangerous galactic mission. She is aided by two small animal mutants: a telepathic weasel and a clairvoyant crab. Knot tries to resist, aided by his psi, but the woman´s beauty and the animals´ powers doom him to a phenomenal adventure. The prior edition was cut; this is the complete version.