---
title: "Fringe (TV series)"
chunk: 5/14
source: "https://en.wikipedia.org/wiki/Fringe_(TV_series)"
category: "reference"
tags: "science, encyclopedia"
date_saved: "2026-05-05T03:09:14.421406+00:00"
instance: "kb-cron"
---

=== Main ===
Anna Torv as Olivia Dunham: a Northwestern University-educated Federal Bureau of Investigation (FBI) agent assigned to investigate the spread of unexplained phenomena. She later discovers Walter performed tests on her when she was a child using nootropic drug Cortexiphan, giving her unusual abilities. Torv also plays Olivia's counterpart in the parallel universe, dubbed by the characters of the prime universe as "Fauxlivia", as well as William Bell.
Joshua Jackson as Peter Bishop: a jack of all trades who is brought in as a civilian consultant by Olivia to work with his estranged father, Walter. Peter is actually "Walternate's" son from the alternate universe, abducted by Walter shortly after his own Peter's death at a young age.
John Noble as Dr. Walter Bishop: a former government researcher in the field of fringe science who was seen as a mad scientist and institutionalized after a lab accident in which his assistant was killed. Noble also portrays the Walter's alternate, dubbed "Walternate" by the characters in the prime universe. Walternate rose to power as the U.S. Secretary of Defense and instigated the war against the prime universe after the abduction of his son Peter.
Lance Reddick as Phillip Broyles (seasons 1–4; recurring season 5): a Homeland Security agent and Senior-Agent-in-Charge (SAC) who runs Fringe Division. Reddick also portrays Broyles' alternate (known as Colonel Broyles), who finds sympathy for Olivia and sacrifices himself during the third season to allow her to escape the parallel universe. In the fourth season's alternate timeline, Colonel Broyles remains alive.
Kirk Acevedo as Charlie Francis (seasons 1–2; recurring season 3): An FBI senior agent, Olivia's colleague and close friend, and the second-in-command of Fringe Division before his demise. Though Charlie is killed early in the second season, Acevedo reprises the role of Charlie in the alternate universe.
Blair Brown as Nina Sharp (seasons 1–4; recurring season 5): the Chief Operating Officer of Massive Dynamic, a leading firm in science and technology research and longtime friend of Walter and William. She also plays her doppelganger in the parallel universe within the alternate timeline of season 4 as an agent for David Robert Jones' plans.
Jasika Nicole as Astrid Farnsworth: an FBI Junior Agent and assistant to Olivia and Walter. Astrid's counterpart in the alternate universe, who has behaviors similar to autism, is also played by Nicole.
Mark Valley as John Scott (season 1): Olivia's former FBI partner and secret lover, whose death in "Pilot" leads Olivia to join the Fringe division.
Seth Gabel as Lincoln Lee (season 4; guest star seasons 2 and 5; recurring season 3): an agent of the parallel universe Fringe Division. The prime universe version of Lincoln, also played by Gabel, was introduced in the episode "Stowaway" as a special agent stationed at the FBI building in Hartford, Connecticut, later joining Fringe division within season 4.

=== Recurring ===
Michael Cerveris as September/the Observer/Donald: one of several "Observers," a traveling chronicler and enforcer of extraordinary events. An Observer appears in one form or another, usually in an Alfred Hitchcock-like cameo, in each episode.
Clark Middleton as Edward Markham: A man who operates a bookstore specializing in rare collectables. He appears in one episode every season.
Ari Graynor as Rachel Dunham (seasons 1–2): Olivia's sister.
Lily Pilblad as Ella Blake (seasons 1–3): Olivia's niece, the daughter of Rachel. Emily Meade portrays the future Ella.
David Call as Nick Lane (seasons 1–2, 4): Olivia's partner during the experimental trials in her childhood. Liam Mackie also portrays Young Nick in season 3.
Leonard Nimoy as Dr. William Bell (seasons 1–4): Walter's former lab partner, the founder of Massive Dynamic, apparently killed in the season 2 finale. Nimoy, who had retired from acting after season 2, agreed to provide the voice of Bell, allowing for the character's reappearance via an animated character in season 3. He reappears in season 4 after the timeline is altered.
Michael Gaston as Sanford Harris (season 1): an old nemesis of Olivia's assigned to assess Fringe Division.
Jared Harris as David Robert Jones (seasons 1, 4): leader of the ZFT cult, and killed in the season 1 finale. In the alternate timeline Peter is projected into, it appears he is alive, and that the shapeshifters have been working for him.
Chance Kelly as Mitchell Loeb (season 1): an FBI agent and mole working for ZFT.
Ryan McDonald as Brandon Fayette (seasons 2–4): a scientist at Massive Dynamic. In the parallel universe, Brandon works directly for Secretary of Defense Bishop, overseeing many of his less ethical projects.
Kevin Corrigan as Sam Weiss (seasons 2–3): Olivia's Yoda-like amateur psychologist and manager of a Boston-area bowling alley; his family line maintains knowledge of the "First People," a race of intelligent beings believed to have created the doomsday device.
Karen Holness as Diane Broyles (seasons 2–4): the wife of Colonel Broyles in the parallel universe and ex-wife of General Broyles in the prime universe.
Sebastian Roché as Thomas Jerome Newton (seasons 2–3): the leader of the shapeshifters, human/machine hybrids and undercover agents from the alternate universe. The character commits suicide during the third season.
Orla Brady as Elizabeth Bishop (seasons 2–4): Walter's wife and Peter's mother. Brady portrays both the prime and alternate versions.
Philip Winchester as Frank Stanton (seasons 2–3): a virologist for the CDC and introduced as Fauxlivia's romantic interest in season 2. Their relationship ends off-screen in season 4.
Michelle Krusiec as Nadine Park (season 4): a shape-shifting soldier from the alternate timeline, with different features from shapeshifters seen in the normal timeline.
Georgina Haig as Henrietta "Etta" Bishop (seasons 4–5): Peter and Olivia's adult daughter in 2036. Though she is part of the Fringe team, loyal to the Observers, she secretly works with the human resistance to try to reclaim the earth for humans.
Michael Kopsa as Captain Windmark (seasons 4–5): the lead Observer in 2036 and primary antagonist of the Resistance.

== Development ==