The cast of HBO's upcoming Watchmen TV series is beginning to take shape.

As the pilot for Damon Lindelof's upcoming Watchmen series prepares for filming, Don Johnson (Django Unchained), Regina King (The Leftovers), Tim Blake Nelson (The Incredible Hulk), Louis Gossett Jr. (Hap and Leonard), Adelaide Clemens (Silent Hill: Revelation) and Andrew Howard (Bates Motel) have joined the cast. Lindelof previously worked with King on their previous HBO series The Leftovers.

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According to Deadline, the casting announcement does not specify which roles the actors will play in the HBO series, though Lindelof has teased the upcoming show will introduce "new faces" to the Watchmen mythos. King is rumored to play a character named Angela Abar. Gossett Jr. will reportedly play a character called Old Man, while Howard takes on the mantle of Red Scare and Clemens plays Pirate Jenny.

Yesterday, Lindelof reiterated the HBO TV show will not be a direct adaptation of Alan Moore and Dave Gibbons' seminal comic book series nor serve as a conventional sequel. Though the events of the comic book are canon to the adaptation, it will exist in a contemporary setting within the same universe as the original story.

The HBO adaptation of Watchmen is being developed for television by The Leftovers showrunner Damon Lindelof. While there has been no announced start date, the first season is expected to begin filming this year.