After helping the Merc With the Mouth break box office records as Weasel in Deadpool earlier this year, T.J. Miller has signed on to another high-profile movie. The actor will star in director Steven Spielberg's adaptation of Ready Player One, which is based on the popular novel by Ernest Cline. T.J. Miller will play an online troll named i-R0k, who scours the online forums of a popular virtual reality game known as Oasis.

Ready Player One centers on a teenager named Wade Watts (Tye Sheridan), who becomes obsessed with this virtual reality world that allows players to live out their fantasies. After the game's creator suddenly dies, an elaborate treasure hunt is held within the Oasis world, with the winner emerging to take control of the entire company. Along with gamers from around the world, Wade joins the adventure, and quickly finds himself pitted against powerful corporate foes and other ruthless competitors who will do anything, in the oasis or the real world, to reach the treasure first.

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The cast also includes Olivia Cooke as Sam, a Canadian blogger who is known in the Oasis world as Art3mis, and will become a love interest for the lead character. Ben Mendelsohn is playing the executive of an Internet company who is trying to take control of Oasis. Mark Rylance and Simon Pegg have also recently joined the cast as James Donovan Halliday and Orgen Morrow, who co-created Oasis. It isn't known how many other main characters have yet to be cast, but The Hollywood Reporter reveals that production is slated to begin in late June.

Steven Spielberg is directing from a script by Zak Penn and Ernest Cline, who wrote the original novel the movie is adapted from. Ready Player One was originally scheduled for release on December 15, 2017, but that was before Disney announced that their highly-anticipated sequel Star Wars: Episode VIII will now debut on that date. Warner Bros. announced in February that they will move Ready Player One to March 30, 2018, where it currently doesn't have any competition in that date.

Aside from his role as Weasel in Deadpool, T.J. Miller stars on the hit HBO series Silicon Valley, which is currently airing its third season. The actor is expected to reprise his Weasel role in Deadpool 2, which has been rumored to start shooting this fall. He also stars in the indie comedy Search Party, which hit theaters last month, and he will next be seen in Office Christmas Party, which doesn't have a release date in place yet.