Who is Nathaniel Milbury, Adam Driver's mysterious X-Men character

Adam Driver is set to portray a character named Nathaniel Milbury in Marvel's upcoming X-Men reboot, but his role is shrouded in mystery. Collider reports that the character may have a significant connection to the classic villain Mister Sinister.

Fans are already speculating about what this casting means for the film's story. The report raises the question of whether Milbury is a new persona for an existing villain or a completely original creation for the cinematic universe.