Demetrius

Demetrius was a manipulative mercenary hired by Echidna to lure Hercules into a death trap. He faked a loving relationship with Alcmene and then kidnapped her, taking her to Echidna. Hercules followed and managed to defeat Demetrius and rescue his mother. During the battle in Echidna's cave, Demetrius was knocked unconscious by one of Echidna's tentacles. His fate is uncertain as Hercules sealed the cave leaving him trapped with Echidna.