Sanford Harris is a high-level consultant for the Department of Homeland Security.
Harris had once been prosecuted by Olivia Dunham for sexually assaulting three women.
Harris was later tasked to conduct a full review of the Fringe Division. He informs Phillip Broyles that the Pentagon is concerned about the way the division was put together and that while he is conducting his investigation, the division is under his purview. Broyles suspects that Harris is here to "punish" Olivia for prosecuting him on a charge of sexual assault on three women which was later overturned. Harris denies this but tells Broyles that he is not convinced that Olivia Dunham is the superstar that Broyles thinks she is.
Harris confronted Olivia in her hospital room about the people she associates with: John Scott, a traitor to his country; Walter Bishop, accused of manslaughter and unfit to stand trial; Peter Bishop, arrested seven times. He tells her that he has the prerogative to question her sanity, loyalty and worthiness to serve. In listing Olivia's faults, Harris makes one obvious error: No one knew that John Scott was a traitor until after he had been saved. ("Bound")
Harris continued to give Olivia a hard time, until Broyles told him that if he continued his personal vendetta against Olivia, he will put his career on the line to protect her. ("The No-Brainer")
Harris later attempted to interview David Robert Jones, contrary to Jones grand design... leading to the death of a Junior Agent Kent. Harris, limited by his own adherence to dogma and procedure, ultimately yielded to Broyles and Dunham, and their method of dealing with Jones. ("Ability")
- In Ability he was referred to as 'agent', which may contradict the initial claim that he is a consultant.