Adoon

 was a young pickpocket in ancient Baghdad. When the Cat-People arrive, he thought they were sand demons. The Second Doctor befriended him, and after stealing the power pack from Lotuss' gun, he had Aroon plant it on Thorsuun. The Cat-People thus believed that Thorsuun had betrayed them. The Doctor sent Aroon away to avoid further trouble. (PROSE: Invasion of the Cat-People)