Early life As a child, Slattery is encouraged towards acting by his mother, eventually finding roles on stage, and in television and film. During this time, he develops a friendship with fellow actor
Joe Pantoliano, even though Pantoliano at one point steals a role from Slattery.
Posing as the Mandarin Washed-up and with a serious drug addiction, Slattery is eventually hired by
Aldrich Killian and the think tank
Advanced Idea Mechanics (AIM) to portray the Mandarin, a persona influenced by many modern terrorists and named after a supposed legendary Chinese title. Slattery stars in propaganda videos that are broadcast to the world as a cover for AIM's explosive
Extremis experiments. Slattery lives oblivious to the true meaning of his actions, surrounded by wealth and drugs provided by AIM, until he is discovered by
Tony Stark. Slattery is arrested following Stark's defeat of Killian, but was pleased by the publicity he received as he was arrested.
Incarceration In Seagate Prison, Slattery lives luxuriously, with his own personal "butler" and adoring fans among the other inmates, until he is broken out by
Jackson Norriss, a
Ten Rings terrorist posing as a documentary filmmaker, who explains that the
real "Mandarin" is angered with Slattery's use of the title, and wishes to take it back.
Helping Shang-Chi Following the events of
All Hail the King, Slattery was sentenced to death by the Ten Rings but Xu Wenwu, the real leader of the Ten Rings, made Slattery his "court
jester" within his compound after Slattery entertained him with his
Shakespeare monologues. While imprisoned, Slattery becomes sober and more refined, and befriends a captured
hundun that he names
Morris. In 2024, Slattery escapes the compound with the help of Wenwu's children
Shang-Chi and
Xialing as well as Shang-Chi's friend
Katy, and travels with them to Morris' home,
Ta Lo. Slattery helps defend the mystical village from the Ten Rings and later the forces of the
Dweller-in-Darkness. After the Dweller's defeat, Slattery and Morris are present among the Ta Lo warriors at the funeral ceremony for those who were lost in the battle.
Mentoring Simon Williams Two years after the events of
Shang-Chi and the Legend of the Ten Rings, Slattery returns to
Hollywood to pursue acting again, but is detained by the
FBI and
DODC. To avoid returning to prison to finish his interrupted term, Slattery accepts a deal with the DODC to gather
surveillance on aspiring actor
Simon Williams, whom the DODC claims is extremely dangerous due to superpowers Williams keeps hidden from the public. Over the next several months, Slattery provides information to the DODC while mentoring and forming a close friendship with Williams as they both struggle in the
film industry, including auditioning for roles in the remake of the in-universe film
Wonder Man. Simon withholds his superhuman status from the film's producers due to the industry rule barring superpowered actors from auditioning for the title role but eventually confides his secret to Slattery. After the two are cast as the leads in the high-profile film, Simon discovers Slattery's motives and unleashes his powers in a rage, destroying a large soundstage in the process. With the DODC closing in on Williams, a remorseful Slattery dons his Mandarin persona and broadcasts a video message claiming responsibility for the explosion. Even though the DODC still suspects Williams, Slattery is arrested and sent to a
supermax DODC prison. Williams finishes working on the film while Slattery's role is recast with Pantoliano.
Wonder Man becomes a commercial and critical success, but a lonely Williams decides to break Slattery out of prison. Posing as a security guard, Williams infiltrates the prison and uses his powers to free Slattery. The two friends reconcile before flying away together. == Concept and creation ==