Marvel One-Shot: All Hail the King

All Hail the King is a 2014 American direct-to-video short film featuring the Marvel Cinematic Universe (MCU) character Trevor Slattery, produced by Marvel Studios and distributed by Walt Disney Studios Home Entertainment on the home media release of Thor: The Dark World. 

Trevor Slattery, having been captured at the end of Iron Man 3, is now being held in Seagate Prison. At the prison he is living luxuriously, with his own personal "butler" Herman, and other inmates acting as his fan club and protection. Slattery is interviewed by documentary filmmaker Jackson Norriss, who wishes to chronicle the events of the Mandarin situation seen in Iron Man 3. Norriss, trying to learn more about Slattery personally, recounts his past from his first casting as a child as well as his starring in a failed CBS pilot. Norriss eventually informs Slattery that his portrayal has angered some people, including the actual Ten Rings terrorist group, which Slattery did not know existed. Norriss tells him the history of the Mandarin and the terrorist group, before revealing that he is actually a member of the group. He then pulls out a gun and kills the guards and Herman before telling Slattery the real reason for the interview is to break him out of prison so he can meet the actual Mandarin. Hearing this, Slattery still has no idea of the full ramifications of his posing as the Mandarin.