Gorgon the Invincible is a former Dark One that was, or at least had to ability to look like a Bandersnatch who could breathe fire. It, along with all the other past Dark Ones join Nimue in Storybrooke where they plot to snuff out the light once and for all, but are ultimately defeated by Captain Hook, who sacrifices his life. However, what soon becomes apparent is that all of the power from Gorgon and the other Dark Ones was in fact transferred back into Rumplestiltskin, thus making Hook's sacrifice pointless.