SOURCE: The Citadel of Fear by Francis Stevens (Argosy, 1918)

DESCRIPTION: "The hands that gripped him were unnaturally long and sinewy....Devil or man or monkey, it was the strongest, most thoroughly energetic antagonist he had ever encountered. It had been silent, but now it was snarling in a slobbering, avid sort of way that made Colin's gorge rise in disgust..."

NOTES: Archer Kennedy created his guardian by placing a human in the sacred transmuting swamp earth and transforming him. Dubbed "Ghengis Khan", the ape-like creature would escape the mansion grounds and attack people.

HISTORY: Colin O'Hara's struggle with Khan ends with him breaking the creature's arm, much in the same way Beowulf tore off Grendel's arm.