Caliban used to be human, an aging actor who lost his job and with it his hope. He had a gun at his head, about to quit on life when a vortex appeared in front of him. A woman appeared whom the vortex, and he perceived her to be an angel. Lucretia offered him youth and fortune, only thing he needed to do was save the world from Shiva. He agreed and was transformed into a monster.
Now he stalks the hell’s maiden to fulfill his pact. Once he almost got her but Shiva escaped when she saw his strength.
On the second fight they were interrupted by some vampires. Shiva again escapes and lets Caliban deal with the rabble. Luxura arrives and blasts Caliban with her dragon form, killing him.
When Luxura and Shiva have left Lucretia again appears in a vortex and resurrects Caliban, not allowing him to escape his pact so easily.