Jumper is a male spider from Xanth. He was first introduced in Jumper Cable as a major character.
Jumper is the husband of Eris; lover of Angie Ina, Sharon, and Phanta; and a descendant of Jumper.
Jumper he can change into man form. When he married Demoness Eris, he became immortal. She gives him temporary powers of size and form changing and invulnerability.
Novels: Jumper Cable, Knot Gneiss, Well-Tempered Clavicle, Esrever Doom, Board Stiff, Five Portraits