Dr. Satán y la magia negra (1968)
In the hell, the King demon orders Dr Satan to return to earth to destroy Yei Lin, a powerful Wizard of black magic, and steal the formula that transforms all metals into gold in order to become the master of the world
El violador infernal (1988)
El violador infernal 1988 Carlos El Gato is a serial rapist, hes condemned to the electric chair, but before to die he and Satan in a woman form makes a deal Carlos return from beyond and begins to rape women and a gay guy, then he kills them