Crommyon Sow Picture

This monstrous pig was owned by an old hag named Phaea, and was sometimes herself called by that name. The pair wreaked havoc in the land of Crommyon, purportedly one of the entrances to the Underworld, until they were slain by Theseus. Incidentally, Theseus killed several other villains inhabiting other entrances to the Underworld, all while on his way to Athens to claim his birthright.

The Crommyon Sow was one of Typhon and Echidna's many abhorrent children, and was herself the mother of another monstrous swine, the Calydonian Boar.
Watch Your Back
The banshee
Crommyon Sow
Lethe
Underworld