Clash of the Titans
While on the Gorgon's island, Perseus and his companions are attacked by Dioskilos, Medusa's two-headed hellhound. During the fight, one of the party is killed by the beast, before he is eventually slain by Perseus. He leads his two remaining allies into the gorgon's lair, where Medusa herself kills the two men, shooting one of them with an arrow and petrifying the other. Perseus uses his shield's reflective side to deceive Medusa and decapitates her. He collects her head, but his shield is dissolved by the gorgon's caustic blood.