Will Arnett and Oscar nominee Michael Shannon are boarding Jonah Hex, Warner Bros. and Legendary's action Western based on the DC Comics character.

Jimmy Hayward is directing Jonah Hex, whose cast also includes Josh Brolin, John Malkovich and Megan Fox. It's the story of Hex (Brolin), a scarred bounty hunter tracking a voodoo practitioner (Malk¬ovich) who wants to raise an army of the undead to liberate the South.

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According to The Hollywood Reporter, Arnett will play a Union soldier who enlists Hex and is blindsided by the dirty fighting style of his enemies. The role is not inherently comic.

Shannon plays Doc Cross Williams, the bizarre ringleader of a brutal gladiator circus event. The character might appear in sequels.

The film is due to start production this month in Louisiana.