Production on Sony's Bloodshot adaption is underway, but the film has already undergone one major recasting.

According to Variety, Guy Pearce is in talks to take over a key role vacated by Michael Sheen, who was forced to exit the project due to scheduling concerns. Should a deal take, Pearce would fill the role of Dr. Emil Harting, who created the nanotechnology that exists within Bloodshot's body that allows him to not only heal, but push beyond normal human limitations.

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Pearce, of course, is best known for his roles in films like Memento and Iron Man 3. He most recently appeared in The Catcher and the Spy alongside Paul Rudd and will star in Mary Queen of Scots with Saoirse Ronan and Margot Robbie. On the television side, the actor is coming off of the series Jack Irish, where he stars in the titular role, and has recently wrapped up work on The Innocents.

Bloodshot was created by Kevin VanHook, Bob Layton and Don Perlin for Valiant Comics in 1992. The character is a mortally wounded soldier that is granted regeneration abilities and the power to morph his body because of the nanites in his bloodstream. Thanks to the abilities granted to him by this nanite technology, Bloodshot is tasked with rounding up superpowered outcasts known as harbingers.

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Bloodshot, now in production, is expected to kick off Sony's five-film shared universe plan, which will also include adaptations of fellow Valiant titles Harbingers and Harbinger Wars.

Targeted for release in 2020, director Dave Wilson’s Bloodshot stars Vin Diesel, Lamorne Morris, Toby Kebbell, Eiza Gonzalez, Sam Huegan, Talulah Riley and Alex Hernandez.