Deborah Ayorinde plays as Lucky Emory, Detective Dawn Reeve in THEM.
Deborah Ayorinde is the top #1 member of the cast and appears in 18 episodes.

Ryan Christian Kwanten (born 28 November 1976) is an Australian actor and producer. He played Vinnie Patterson from 1997 to 2002 in the Australian soap opera Home and Away. After his stint ended, he joined the American teen drama series Summerland, portraying Jay Robertson. From 2008 to 2014, he played Jason Stackhouse in True Blood. From 2018 to 2019 he produced and starred in the crime drama series The Oath as Steve Hammond. In 2021, he starred in season one of the horror drama anthology series Them as George Bell. In 2022, he portrayed Thomas Weylin in Kindred, a series adaptation based on Octavia E. Butler's celebrated 1979 novel of the same name. Description above from the Wikipedia article Ryan Kwanten, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Ryan Kwanten plays as George Bell in THEM.
Ryan Kwanten is the top #2 member of the cast and appears in 10 episodes.

Alison Pill (born November 27, 1985) is a Canadian actress. A former child actress, Pill began her career at age 12, appearing in numerous films and television series. She transitioned to adult roles and her breakthrough came with the television series The Book of Daniel (2006). That same year, she was nominated for a Tony Award for Best Featured Actress in a Play for her performance in The Lieutenant of Inishmore (2006). Pill had prominent roles in the films Confessions of a Teenage Drama Queen (2004), Plain Truth (2004), Milk (2008), Scott Pilgrim vs. the World (2010), Midnight in Paris (2011), Hail, Caesar! (2016), Vice (2018), the television series In Treatment (2009), The Pillars of the Earth (2010), The Newsroom (2012–2014), American Horror Story: Cult (2017), Star Trek: Picard (2020–2022), Devs (2020), and Them (2021).

Alison Pill plays as Betty Wendell in THEM.
Alison Pill is the top #3 member of the cast and appears in 10 episodes.

Ashley Thomas (born February 4, 1985) is an English recording artist and actor, also known by his stage name Bashy.

Ashley Thomas plays as Henry Emory in THEM.
Ashley Thomas is the top #4 member of the cast and appears in 10 episodes.

Melody Hurd is an actress, known for Battle at Big Rock (2019), Them (2021) and Fatherhood (2021).

Melody Hurd plays as Gracie Emory in THEM.
Melody Hurd is the top #5 member of the cast and appears in 10 episodes.

An actress, known for The 70th Annual Tony Awards (2016), The 89th Annual Macy's Thanksgiving Day Parade (2015) and Broadway.com 2016 Tony Awards Special (2016) and The Lion King (2019).

Shahadi Wright Joseph plays as Ruby Emory in THEM.
Shahadi Wright Joseph is the top #6 member of the cast and appears in 10 episodes.

Film and stage actor Derek Phillips was born in Miami, Florida on April 18, 1976, and attended Baylor University where he received a BFA in acting. Upon graduation Derek moved to New York and began acting professionally in both television and regional theatre performing throughout the country in numerous plays including "The Winter's Tale" (Baltimore Center Stage), "Of Mice and Men" (Dallas Theater Center), "The Glass Menagerie" (Virginia Stage Company), and "King o' The Moon" (Capital Repertory Theatre). After years of regional theatre and recurring roles on "The Guiding Light", "As the World Turns", and "All My Children" Derek finally got his break playing the emotionally charged role of Billy Riggins on the critically acclaimed NBC television show "Friday Night Lights." Derek is also an associate producer, assistant director and resident actor for the award-winning, ensemble based theatre company Second Thought Theatre, where he has performed as an actor in the regional premiere of Eric Bogosian's "Humpty Dumpty", Douglas Post's "Earth and Sky", and the world premiere of Steven Walters "Pluck the Day."

Derek Phillips plays as Heron (voice) in THEM.
Derek Phillips is the top #7 member of the cast and appears in 8 episodes.

Pamela Suzette Grier (born May 26, 1949) is an American actress. Described by Quentin Tarantino as cinema's first female action star, she achieved fame for her starring roles in a string of 1970s action, blaxploitation, and women in prison films for American International Pictures and New World Pictures. Her accolades include nominations for an Emmy Award, a Golden Globe Award, a Screen Actors Guild Award, a Satellite Award, and a Saturn Award. Grier came to prominence with her titular roles in the films Coffy (1973) and Foxy Brown (1974); her other major films during this period included The Big Doll House (1971), Women in Cages (1971), The Big Bird Cage (1972), Black Mama, White Mama (1973), Scream Blacula Scream (1973), The Arena (1974), Sheba, Baby (1975), Bucktown (1975), and Friday Foster (1975). She portrayed the title character in Quentin Tarantino's crime film Jackie Brown (1997), and also appeared in Escape from L.A. (1996), Jawbreaker (1999), Holy Smoke!, (1999), Bones (2001), Just Wright (2010), Larry Crowne (2011), and Poms (2019). On television, Grier portrayed Eleanor Winthrop in the Showtime comedy-drama series Linc's (1998–2000), Kate "Kit" Porter on the Showtime drama series The L Word (2004–2009), and Constance Terry in the ABC sitcom Bless This Mess (2019–2020). She received praise for her work in the animated series Happily Ever After: Fairy Tales for Every Child (1999). Description above from the Wikipedia article Pam Grier, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Pam Grier plays as Athena in THEM.
Pam Grier is the top #8 member of the cast and appears in 8 episodes.

Luke James plays as Edmund Gaines in THEM.
Luke James is the top #9 member of the cast and appears in 8 episodes.

Christopher Heyerdahl is a Canadian actor who has had roles in many prominent television shows and movies. He is 6 ft 4 in (1.93 m) tall.

Christopher Heyerdahl plays as Hiram Epps in THEM.
Christopher Heyerdahl is the top #10 member of the cast and appears in 0 episodes.