Steven Strait is an American actor, fashion model, and rock singer. The son of Jean (Viscione) and Richard Dyer Strait. He is of half English and half Italian descent. As a child, Steven grew up in Greenwich Village with his family. He attended Xavier High School and enrolled himself at the Stella Adler Studio of Acting to pursue his dream as an actor.

Steven Strait plays as Jim Holden in The Expanse.
Steven Strait is the top #1 member of the cast and appears in 56 episodes.

Cas Anvar plays as Alex Kamal in The Expanse.
Cas Anvar is the top #2 member of the cast and appears in 56 episodes.

Dominique Tipper plays as Naomi Nagata in The Expanse.
Dominique Tipper is the top #3 member of the cast and appears in 56 episodes.

Wes Chatham was born October 11, 1978 and grew up in North Georgia. Wes's parents divorced when he was two and he spent most of his childhood with his Mom, sister and brother. On a whim, Wes's mother took his sister to a audition for a Tide commercial in Savannah, Georgia and brought Wes along. While waiting for his sister in the lobby, the casting director discovered Wes and at the age of five, he was offered a national campaign for Tide. At the age of thirteen, Wes moved in with his father and without a lot of supervision and as a restless and rebellious teen, he was kicked out of high school and sent to the Gift Center in Lawrencville, GA to finish school. The Gift Center was a second chance school for troubled youth, offering very small classes and a higher standard of education than public school. While attending classes, a professional theater company out of Atlanta started a mentoring program with the school and Wes was chosen to write a play that was later performed by his classmates. It was from this experience that Wes found his passion for the arts. After graduating high school, Wes joined the military. He worked as an aviation firefighter on the flight deck of the USS Essex, working in crash and salvage for four years. Wes' break into acting came just three months before his tour was finished when Denzel Washington chose his ship to shoot the movie Antwone Fisher. While searching for some authentic military guys for the movie, Wes was discovered by casting director Robi Reed and given his first movie making experience. That's when he decided he wanted to pursue his life long dream of acting. Following Antwone Fisher, Robi convinced Wes to make the move to Hollywood and shortly thereafter cast him in his first series regular role on Showtime's Barbershop. Wes really started to get attention when Paul Haggis cast him along side Tommy Lee Jones as Corporal Steve Penning in In the Valley of Elah. Tommy Lee Jones was nominated for the Academy Award for Best Actor for his role. In 2009, Wes would go on to work with Oliver Stone in W. as Frank Benedict, George W's Fraternity brother. The following year, Wes landed another series regular role on CBS' hit TV show The Unit as new Unit team member Staff Sergeant Sam McBride aka Whiplash, working with David Mamet and Shawn Ryan. Wes also starred as Brian Danielson in Brett Simmons' Husk. In 2011, Wes's was a part of the SAG Award Winning Ensemble Cast in DreamWork's The Help starring Emma Stone, Viola Davis, Octavia Spencer, Jessica Chastain, Allison Janney, Mike Vogel and Sissy Spacek. Cast in the role of Carleton Phelan, Wes played Emma Stone's brother in the film. In February 2012, the film received four Academy Award nominations including Best Picture, Best Actress for Viola Davis, Best Supporting Actress for Jessica Chastain and a win for Best Supporting Actress for Octavia Spencer. In 2012, Wes landed his first title role in Joel Silver's The Philly Kid. A fan of mixed martial arts, Wes really dived into the character of Dillion McGwire, performing all of his own stunts. The film debuted in theaters May of 2012. Following The Philly Kid, Wes starred in This Thing With Sarah, which was recently accepted to the San Diego Film Festival. In 2013 Wes wrapped two studio films, Broken Horses and The Town That Dreaded Sundown. Both are due in theaters late 2013 early 2014.

Wes Chatham plays as Amos Burton in The Expanse.
Wes Chatham is the top #4 member of the cast and appears in 56 episodes.

Shohreh Aghdashloo ( born May 11, 1952) is an Iranian American actress. After establishing a theatre and film career in Iran, Aghdashloo moved to England during the Iranian Revolution in 1979, and subsequently became a citizen of the United States. After several years playing supporting roles in television and film, her performance in House of Sand and Fog (2003) brought her several film critics' awards and a nomination for an Academy Award for Best Supporting Actress. She has continued to play supporting and character roles in film and television and won an Emmy Award for her work in the television drama House of Saddam (2008). Description above from the Wikipedia Shohreh Aghdashloo, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Shohreh Aghdashloo plays as Chrisjen Avasarala in The Expanse.
Shohreh Aghdashloo is the top #5 member of the cast and appears in 56 episodes.

Frankie Adams is a New Zealand actress and amateur boxer of Samoan heritage. She is 6 ft (1.8 m) tall. Adams' first role, aged 16, was that of Ula Levi in the soap opera Shortland Street. She has also had roles in the television series Wentworth and in the film 1000 Ropes. As a boxer, Adams has participated in a Fight For Life charity boxing event

Frankie Adams plays as Roberta 'Bobbie' W. Draper, Bobbie Draper in The Expanse.
Frankie Adams is the top #6 member of the cast and appears in 46 episodes.

Thomas Jane (born Thomas Elliott III; February 22, 1969) is an American actor, known for his roles in the 1999 film Deep Blue Sea, the 2001 TV movie 61*, the 2004 film The Punisher and the 2007 Stephen King adaptation The Mist. He currently stars in the HBO comedy-drama series Hung. Description above from the Wikipedia article Thomas Jane, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Thomas Jane plays as Detective Josephus Miller in The Expanse.
Thomas Jane is the top #7 member of the cast and appears in 23 episodes.

Florence Faivre grew up in the town of Aix-en-Provence in the south of France. Early in her adolescence, her and her family moved to Bangkok, Thailand. Florence started her career in show business there at the age of 13. She was the regular host of two Thai television shows, "Teentalk" and "E for Teens", while also hosting countless programs as a guest presenter for international television shows throughout South East Asia. Then in 2002, in her final year of high school, Florence was chosen to be the lead in the film "The Siam Renaissance" from the producers of the internationally acclaimed Thai films "Bangkok Dangerous" and "Tears of the Black Tiger." The Siam Renaissance would be the second largest Thai production to date. She was unanimously praised by the critics for her star performance in the film, receiving a Best Actress nomination at the 2004 Bangkok International Film Festival. Florence Faivre then moved to New York City to further pursue her acting career. Soon afterward, she was cast as the female lead alongside Bernard Giraudeau in 'Chokdee', a story based upon the life of Dida Diafat, the world's first French champion in Thai Boxing. Florence then took on the female lead in The Elephant King featuring Academy Award Winner Ellen Burstyn. The Elephant King premiered at the Tribeca Film Festival, was a Spotlight Film of the Hamptons International Film Festival, and went on to win Best Film laurels at the Sacramento International Film Festival, Oxford Film Festival, SoCal Independent Film Festival, Lone Star Film Festival, and others from around the world. The Elephant King will be released in 2008 theatrically in the United States and worldwide. Florence has also recently concluded work on "The Coffin" which will make its market premiere in May 2008 at the Cannes Film Festival. Florence Faivre has recently guest starred in television shows such as "The Following", "How to Make it in America" and "Kings." She resides between New York City and Los Angeles.

Florence Faivre plays as Julie Mao in The Expanse.
Florence Faivre is the top #8 member of the cast and appears in 23 episodes.

Cara Gee is a Canadian stage, screen and web actress. She holds a BFA in Acting from the University of Windsor, Ontario, Canada.

Cara Gee plays as Camina Drummer in The Expanse.
Cara Gee is the top #9 member of the cast and appears in 20 episodes.

​From Wikipedia, the free encyclopedia.   Shawn Doyle (born 1968) is a Canadian actor. Doyle was born and raised in Wabush, Newfoundland, the son of actor Jerry Doyle. He moved to Toronto to study theatre at York University. He has won three awards for his critically acclaimed performance as Dennis Langley in The Eleventh Hour. Since moving to Los Angeles, he has also starred in the American shows 24 as Ronnie Lobell, Desperate Housewives as Mr. Hartley and as Joey Henrickson in Big Love. He has also made several film appearances; as Jack Shepard in Frequency and as Brian in 1998's Babyface and as Stephen in 2005 film Sabah, A Love Story. His TV movie roles include John in the film adaptation of The Robber Bride and a lawyer in Lost. He had a recurring role as "Joey Henrickson" a former NFL player and brother of Bill Henrickson, the main character in the HBO series Big Love and currently stars as agoraphobic chess genius Arkady Balagan in the Showcase original series Endgame. He is married to actress Allegra Fulton and together they have one son Description above from the Wikipedia article Shawn Doyle, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Shawn Doyle plays as Sadavir Errinwright in The Expanse.
Shawn Doyle is the top #10 member of the cast and appears in 13 episodes.