Hadji does not appear in the first episode "Mystery of the Lixard Men" (18 September 1964). He appears in all other episodes, but is introduced as a new character in episode 2.7 "Calcutta Adventure" (30 October 1964). "Calcutta Adventure" was actually the second episode produced; the episodes were shown out of production order. The name of the island where the Quests, Race and Hadji lived was called Palm Key. John Stephenson was replaced by Don Messick as the voice ...[Read Story ]