Rollebesetning

• Michael Fassbender — David / Walter
• Katherine Waterston — Daniels Branson
• Billy Crudup — Christopher Oram
• Amy Seimetz — Maggie Faris
• Carmen Ejogo — Karine Oram
• Danny McBride — Tennessee Faris
• Callie Hernandez — Upworth
• Jussie Smollett — Ricks
• Tess Haubrich — Sarah Rosenthal
• Nathaniel Dean — seržant Hallett
• Demián Bichir — seržant Carl Lope
• Alexander England — Ankor
• Uli Latukefu — Cole
• Goran D. Kleut — Xenomorph / Neomorph
• Andrew Crawford — Neomorph
• Lorelei King — hlas 'Matky' (hlas)