Omar (The Destroyer of Delights)

 wasthe son of Lord Cassim. He was concerned about his father, after his father hadn't payed his taxes for two years. He sent Amy and Nisrin to spy on his father. Lord Cassim sent Omar to his death in order kill The Legate of the Caliph, but is saved by The Doctor. When the Djinni's ship self destructed, Nisrin had to stop him being killed by falling shrapnell. (BFA: The Destroyer of Delights)