Stygian Witches - Three women with gray skin and only one eye they share. They have a taste for human flesh.

Giant Scorpions- born from the blood of Acrisius; hypnotized and subdued by the Djinn.

Medusa, the Gorgon appears in the film as a giant, half snake, half human creature. She is beheaded by Perseus, leaving the rest of her body to fall into a lava pit.

Kraken- an enormous sea monster who defeated the titans and was turned to stone by Medusa's head.

Harpies- Winged Demons who come from the body of Hades.

Pegasus- The winged horse that Perseus uses to ride to the confrontation with the Kraken.