Robert Downey Jr. will appear in a small-screen project for the first time since his short stint on Saturday Night Live, playing multiple characters in an HBO series adaptation of the Pulitzer Prize-winning book The Sympathizer.

Viet Thanh Nguyen‘s book centers on a half-French, half-Vietnamese communist double agent during the final days of the Vietnam War and afterward, after he settles in the United States.

Deadline, which broke the news, says legendary Oldboy director Park Chan-wook will direct the series. The project will be produced by Team Downey, the company that the Marvel movie veteran runs with his wife, producer Susan Downey

According to the trade, Downey Jr. will play several characters, including an American congressman, a CIA agent and a Hollywood director. In a statement, Downey said, “Adapting Mr. Nguyen’s important and masterful work requires a visionary team. With…Park at the helm, I expect this to be a creative producing adventure for Susan, me and Team Downey, and a stimulating process for myself in playing these complex supporting roles.”

The series will reportedly feature a predominantly Southeast Asian cast.

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