Echidna Hercules
Echidna, quite literally depicted as the mother of all monsters, is the tertiary antagonist of Hercules: Zero to Hero, and a recurring character in the TV show. She is a titanic figure who is more than a match for Hercules himself, although a devoted mother she sees humans as food at best and likes to terrorize them when not spending time teaching her often rebellious offspring how to behave like proper monsters.

Echidna has appeared in the show multiple times and is one of Hercule's more recurring and formidable opponents, often when she arrives she tries to either destroy cities and towns or seeks to collect people to be devoured by herself or her children.