Revek is a spirit from the Hollow Knight game, he is known to be the protector of the Spirits' Glade. Revek warns the main character of the game the Knight that they will face consequences if they harm any of the inhabitants of the Glade's spirit. When encountered in battle with the Revek, once the player uses the Dream Nail on at least one spirit, Revek appears and charges at the Knight dealing damage. While Revek cannot be damaged he can be temporarily repelled with parrying, using any spell or a Dream Nail on him.
