My Mileage May Vary:
Mjolnir Recon Number 54 (Vic, Security Officer)- Cillian Murphy
Why?:
The officer in the game has a mixed and confusing past, but looks remarkably average in physical appearance and has a quiet personality. Cillian did exactly this with Johnathon Crane- The Scarecrow.
Durandal- Sean Connery
Why?
A god complex, new found self awareness, and an impossibly self-righteous attitude about humanity seems right up Sean's alleyway.
Tycho- Joel Zimmerman (Deadmau5, I am totally serious here)
Why?
He is a true contender in the House/Techno genre, so it makes sense if he could play as an abrasive virtual personality.
Bernar