Fringe Division. A now-living David Robert Jones has, however, tempted him into an alliance. This is later revealed to be because his son is dying, and David Robert Jones is providing medicine to save him in return for Broyles' cooperation. He is instructed to insert a device into the bridge between universes but instead turns himself in to prime-universe Broyles. In season 5, Broyles is "The Dove" for the resistance feeding intel to the underground, he is exposed as the dove and interrogated but he is saved by Peter and Olivia in the series finale. Nina Sharp Nina Sharp (portrayed by Blair Brown; main: season 1–4; recurring: season 5) is the executive director of Massive Dynamic, and has run the business since William Bell's departure to the parallel world. Nina has had long personal ties with Walter and romantic interactions with William. One of her forearms is a highly advanced prosthetic arm. Nina lost her arm while trying to prevent Walter from crossing over to the parallel universe in 1985. The cover story she uses to explain the prosthetic replacement of her arm is that she lost it to cancer. Nina is often cryptic and cautious of interacting with the Fringe members; though she will provide Massive Dynamic's services when necessary, she does not always reveal the full truth of the situation. Nina is able to communicate to William; in the season 1 finale, she arranged for Olivia to be taken to the parallel universe to meet him, while in the season 2 finale, she alerted William to the plan to rescue Peter. After Bell's death, Walter is left in control of Massive Dynamic, but chooses to leave the majority of the control day-to-day workings of the company with Nina. She later becomes his confidant during his despair at having possibly caused the universe to unravel. Alternate timeline: Nina's backstory is altered. She adopted Olivia, and her sister Rachel, after their mother died and Olivia killed their stepfather, and consequently she and Olivia share a much closer relationship. The Nina from the parallel universe is seen to be conspiring with a revived David Robert Jones; however, it's unclear if this is actually the alternate universe Nina or a shapeshifter that David Robert Jones created. In season 5 and the future of 2036, Nina Sharp is the director of Ministry of Science and appeared to cooperate with the Observers. But in