The Gorgon was a naga-like creature that turns to stone any who meet its gaze. It was the sentry of the underground pit where the Sword of Methuselah was hidden.
It was implied that the Gorgon had been in the pit for centuries, and that its victims had been multiple others, including M. Dixon, Abbie's ancestor.
When it first encounter's Abbie and Ichabod, they fled from it. Later, they returned to battle the Gorgon, but with Abraham van Brunt as a ruse since he was headless. While battling Abraham, the Gorgon was finally beheaded by the horseman. 
- In Greek mythology, the Gorgon sisters were three sisters, Stheno, Euryale, and Medusa. With snakes for hair, they had the ability to turn anyone who looked at them into stone, killing them. However, the myths state only Medusa could petrify victims with a look.
- After the Gorgon lost its head, ironically, the Horseman's head became visible to both Crane and Abbie.