Duckthulhu is a powerful primordial entity whom High Command tried to summon in order to enslave mankind in the Darkwing Duck comic arc "F.O.W.L. Disposition". He could mutate people into tentacled monsters that were slaved to his will; even before Duckthulhu had risen, the more weak-minded citizens of St. Canard had started to transform. F.O.W.L. were wrong in believing he could be controlled and Duckthulhu came close to winning before Morgana was able to stop him.