Peter Bishop (Joshua Jackson)Peter is the estranged son of researcher Walter Bishop, who becomes a part of Fringe Division after consulting on a case. While negotiating a shady business deal in Baghdad, Iraq, Peter is tracked down by FBI Special Agent Olivia Dunham to help her get his father, Walter Bishop, released from the mental institution in which he has been housed for 17 years. Olivia needs Walter to help her find an antidote to a mysterious toxin encountered by her partner and fellow agent John Scott, during their pursuit of a suspect in a major case.His vocal skepticism and willingness to break a few rules in order to get the job done makes him a valuable counterbalance to Walter as well as to Olivia.Background: Peter demonstrates a high level of intelligence and deep level of scientific knowledge, in addition to street smarts that allow him to insert himself into dangerous territories and situations around the globe. On paper, however, Peter is a high-school dropout and unusually itinerant, never remaining in one job for more than two months. His list of previous occupations includes a firefighter, a cargo pilot and, thanks to a forged degree from MIT, college chemistry professor. However, Peter's life after his public unveiling as a fraud remains a mystery; among the few details that Olivia can wrangle out of him is that he once owed money to a criminal named Big Eddie. Peter has an IQ of 190 (six points less than his dad, who has a 196 IQ).