Actors Nonso Anozie (The Grey), Stevie Ray Dallimore (The Messenger), and Andrea Powell (The Twilight Saga: Breaking Dawn - Part 2) have joined the cast of Ender's Game.

The story, adapted from Orson Scott Card's heralded sci-fi novel, centers on a young boy named Ender (Asa Butterfield) who gets recruited into a government program for child prodigy's, where they are trained to prevent an imminent alien attack. Nonso Anozie will portray Sergeant Dap, while Stevie Ray Dallimore and Andrea Powell are playing Ender's father and mother. The cast also includes Harrison Ford, Abigail Breslin, and Hailee Steinfeld.

Gavin Hood is directing Ender's Game from his own adapted screenplay. Production is scheduled to begin later this month in New Orleans, with Summit Entertainment distributing.