Vortigan is a minor antagonist in the ABC television series Once Upon a Time, serving as the overarching antagonist of the first half of Season 5 and the main antagonist of the flashback portions of the episode "Nimue."
He slaughtered Nimue's village while searching for the Holy Grail. After Nimue drank from it, she became an immortal and removed Vortigan's heart and crushed it, turning her into the first ever Dark One.