John Boyd as Stuart Scola (season 2–present), FBI Special Agent and Kristen's, and later, Tiffany's field partner.

Alana de la Garza as Special Agent in Charge (SAC) Isobel Castille (season 2–present guest season 1), Mosier's replacement as the team's supervisor.

Sela Ward as Special Agent in Charge (SAC) Dana Mosier (season 1), Solberg's replacement as the team's supervisor.

Connie Nielsen as Special Agent in Charge (SAC) Ellen Solberg ('Pilot'), the team's initial supervisor.

Ebonée Noel as Kristen Chazal (seasons 1–2), FBI Special Agent and an Intelligence Analyst.

Jeremy Sisto as Jubal Valentine, FBI Assistant Special Agent-In-Charge (ASAC).

A.' Zidan, FBI Special Agent and Maggie's partner, West Point graduate, and retired Army Ranger

She is the defacto agent in charge of the team while out in the field.

Missy Peregrym as Maggie Bell, FBI Special Agent.Main article: List of FBI (TV series) characters Main At the start of season 3, Kristen transfers to Dallas, Texas, and is replaced by Tiffany Wallace, a former NYPD officer and White Collar Division agent. Also, Isobel Castille takes Mosier's place as team supervisor following the latter's retirement. Starting in season 2, Stuart Scola, a former Wall Street trader-turned-Special Agent joins the team and is partnered with Kristen, who transitions into field work at the same time. These first-class agents tenaciously investigate cases including terrorism, organized crime, and counterintelligence. Kristen Chazal is the team's most valued resource, a brilliant analyst recruited straight out of college who can piece together the big picture faster than anyone. The team also includes Assistant Special Agent in Charge Jubal Valentine, the nerve center of the office whose ability to easily relate to and engage with both superiors and subordinates makes him a master motivator. Overseeing them is Special Agent in Charge Dana Mosier, who operates under intense pressure and has undeniable command authority. A.' Zidan, a West Point graduate from Queens who spent two years undercover for the DEA before being cherry-picked by the FBI. Her partner is Special Agent Omar Adom 'O. Born into a multi-generational law enforcement family, Special Agent Maggie Bell commits deeply to the people she works with as well as those she protects. This elite unit brings to bear all their talents, intellect, and technical expertise on major cases in order to keep New York and the country safe. The series centers on inner workings of the New York office criminal division of the Federal Bureau of Investigation (FBI).

Imdb white collar season 3 episode 2