One more mutant is posed to join the cast of Fox's X-Men Origins: Wolverine. Blogger JustJared has learned that Dominic Monaghan (Lost) has been cast as Barnell Bohusk, also known as the mutant Blackwing.

In the comics, Blackwing was originally a mutant known as Beak who had the ability to transform into a humanoid bird, with a beaked face, bulbous eyes, wing-like arms, double-jointed knees and talons on his hands. In his transformed state, he also possessed heightened senses and enhanced agility.

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Monaghan joins a cast that includes Hugh Jackman (Wolverine), Liev Schreiber (Sabretooth), Ryan Reynolds (Deadpool), Taylor Kitsch (Gambit), will.i.am (Wraith), Danny Huston (William Stryker), and Lynn Collins (Silver Fox). X-Men Origins: Wolverine slashes its way into theaters on May 1, 2009.