Characters are listed in order of title credit and by appearance on the show. } The series borrows many characters, or at least their names, from the 1997 television series
La Femme Nikita, which was also based on the French film
La Femme Nikita.
Maggie Q portrays Nikita, the protagonist and a former spy and assassin who has gone rogue and now plans to bring down Division. Q also performs her own stunts.
Shane West plays Michael, a Division operative who trained Nikita. He sees Division and its recruits as a kind of family to him, the complete opposite of
Amanda, portrayed by
Melinda Clarke, Division's psychologist, interrogator, and a master manipulator.
Seymour Birkhoff, Division's computer genius and head technician, is portrayed by
Aaron Stanford. The head of Division is Percy, played by
Xander Berkeley. In the season one finale, the audience is introduced to a Senator Madeline Pierce, played by
Alberta Watson, who also played the part of
Madeline in the former
La Femme Nikita television series (Madeline was that series' counterpart to Amanda).
Lyndsy Fonseca portrays Alexandra "Alex" Udinov, a former sex slave and drug addict who was arrested after a robbery and later became Division's newest recruit. She is also a mole whom Nikita is using to destroy Division from the inside. Other recruits include
Jaden (
Tiffany Hines) and
Thom (
Ashton Holmes) but their characters are later killed off by
Nathan (
Thad Luckinbill) and Alex respectively.
Dillon Casey portrays the role of Sean Pierce, a former
Navy SEAL sent to Division directly from Oversight.
Noah Bean portrays Ryan Fletcher, an agent in the
CIA, but later takes over Division. Some other notable recurring characters include
Ari Tasarov (
Peter Outerbridge),
Sergei Semak (
Peter J. Lucas),
Roan (
Rob Stewart), and
Nathan Colville (
Thad Luckinbill).
Main •
Maggie Q as
Nikita Mears: The show's central protagonist and titular character, Nikita is a spy and assassin who has vowed to destroy the secret agency that trained her: Division. She is the mentor and close confidant of Alex, and she is a former protege of Amanda. She gains close ties with majority of the people she works with, such as Michael - who eventually becomes her love interest - Seymour Birkhoff, Owen Elliot and Ryan Fletcher. •
Shane West as
Michael Bishop: An ex-Division agent who fell in love with Nikita and joined forces with her to destroy his former employers. •
Lyndsy Fonseca as
Alexandra "Alex" Udinov: The young woman Nikita rescued the night Division killed her family. She trained to destroy Division, and she also seeks revenge against Division for the massacre of her family. She is Amanda's former protege and Nikita's very close friend. •
Aaron Stanford as Seymour Birkhoff/Lionel Peller: A computer genius, hacker, and nonconformist. Former employee of Division until he sided with Nikita in order to bring order to the underworld of black ops and corrupted crimes. •
Ashton Holmes as Thom: A Division assassin who was recruited before Alex. •
Tiffany Hines as Jaden: A Division assassin who was recruited before Alex. •
Melinda Clarke as
Helen "Amanda" Collins: The show's main antagonist in the third and fourth season, Amanda is a master manipulator, interrogator, and psychologist. She is also a former head of Division as well as an enemy and former mentor of Nikita and Alex. •
Xander Berkeley as Percival "Percy" Rose: The show's main antagonist in the first and second season, Percy is the former head of Division who involves his government access with black market crimes and assassination of powerful people around the world. •
Dillon Casey as Sean Pierce: A former Navy SEAL hired to keep an eye on Division and the activities that take place. •
Devon Sawa as Owen Elliot/Sam Matthews: A former Division cleaner and Guardian who turns against the company. •
Noah Bean as Ryan Fletcher: A former CIA agent and analyst who is a close ally of Nikita. He was appointed the new head of Division in season three to clean up the company's history.
Recurring •
Rob Stewart as Roan (seasons 1–2): Cleaner of Division and Percy's right-hand man. •
Peter Outerbridge as Ari Tasarov (seasons 1–3): Former head of GOGOL, a Russian Division counterpart, and Amanda's former love interest. •
Thad Luckinbill as Nathan Colville (season 1): Alex's neighbor and love interest following her graduation from Division. •
Alberta Watson as Madeline Pierce (guest star season 1; recurring season 2): A U.S. Senator, former member of Oversight and mother of Sean Pierce. Watson had previously played a similar character, also named Madeline, in the 1997 TV series. •
Lyndie Greenwood as Sonya (seasons 2–4): The head technician of Division since Birkhoff's leave and former subordinate of Amanda. •
Helena Mattsson as Cassandra Ovechkin (season 2): Former GOGOL agent and mother of Michael's son, Max. •
Peter J. Lucas as Sergei Semak (season 2): The CEO of Zetrov and head of GOGOL. •
Cameron Daddo as Charles Grayson (season 2): The former
president of the United States. •
Michelle Nolden as Kathleen Spencer (seasons 2–4): The
vice president of the United States, later succeeded Charles Grayson as president. • David S. Lee as Phillip Jones (season 2 & 4; guest season 3): Former CFO of MDK Industries and a high-ranked member of the Invisible Hand. •
Sarah Allen as Anne (season 3): Former Division agent and Amanda's subordinate. •
Richard T. Jones as Evan Danforth (season 3): Former commander in the U.S. Navy and Special Advisor to President Kathleen Spencer. ==Series overview==