Dr. Isaac Parrish is a researcher at Global Dynamics and the head of its Non-Lethal Weapons Lab, and works alongside Zane Donovan. Parrish has a very antagonistic relationship with Douglas Fargo. Statements made in the episode "Glimpse " suggest that some of this resentment stems from Parrish's belief that as the descendant of notable scientists, Fargo did not have to work as hard as others to get where he is today. He also implies that Fargo does not deserve his position as director of Global Dynamics and that he is merely "Mansfield's puppet" (All the Rage).