David Archer

David Archer was the brother of Cerberus chief scientist Dr. Gavin Archer.

David was born an austistic mathematical savant. Present on Aite during Cerberus' Project Overlord, it was discovered that David was able to communicate with the geth on a fundamental level by reproducing their patterns of speech. As part of attempts to exploit the geth's religious tendencies, Cerberus had created a VI to serve as a similar figurehead and give the organisation complete control over all geth. Desperate to avoid the project's failure, Gavin Archer forcibly incorporated David into the VI program, exploiting his savant ability. After this point, the hybrid VI went berserk and began its rampage and escape attempt.

Commander Shepard's deactivation of the rogue VI program freed David from its effects.

If the Commander followed the Paragon route, David was subsequently removed from the care of Cerberus and his brother and taken to Grissom Academy, an Alliance educational instutition for gifted children.

If the Commander followed the Renegade route, David was given medical treatment, stayed in his brother's care and Project Overlord was continued.