Commander Shepard is the lead character in Mass Effect. This would be an extremely badass movie about space and some actor would be fortunate to play this role.
http://www.ranker.com/list/mass-effect-commander-shepard-fancast-_male_/stokified,
Chris Hemsworth
Daniel Day-Lewis
Denzel Washington
Edward Norton
Jason Statham
Joaquin Phoenix
Liam Neeson
Matt Damon
Michael Fassbender
Tom Hardy