Wyatt Hawn Russell (born July 10, 1986) is an American actor and former ice hockey player. He is best known for his roles as Corporal Lewis Ford in Julius Avery's 2018 horror film, Overlord, and as Dud in AMC's Lodge 49. He plays John Walker in the Disney+ series The Falcon and the Winter Soldier, which is set in the Marvel Cinematic Universe.

Wyatt Russell plays as Young Lee Shaw in Monarch: Legacy of Monsters.
Wyatt Russell is the top #1 member of the cast and appears in 2 episodes.

Joe Tippett (born March 1, 1982) is an American actor. He is known for playing Sam Strickland in the NBC drama series Rise and John Ross in the HBO crime drama miniseries Mare of Easttown.

Joe Tippett plays as Tim in Monarch: Legacy of Monsters.
Joe Tippett is the top #2 member of the cast and appears in 2 episodes.

Anna Sawai (born June 11, 1992) is a Japanese–New Zealand actress, dancer and singer. She began her film career in 2009 in a supporting role in the martial arts film Ninja Assassin, and debuted as a professional singer in 2013 as one of the lead vocalists in the J-pop girl group FAKY (2013-2018), singing in both Japanese and English. She co-stars in Justin Lin's Fast & Furious sequel, F9. In 2004, shortly after moving to Japan, Sawai was chosen out of 10,000 applicants to play the title role in the stage musical Annie. Sawai made her professional film debut in the 2009 Warner Bros. film Ninja Assassin, directed by James McTeigue, playing the rebellious teenage female ninja Kiriko who is executed for attempting to escape the Ozunu ninja clan. In 2013, Sawai's work as a professional singer began with the dance/R&B group FAKY. She performed as one of the group's lead vocalists until her final show with the group on December 20, 2018. Her departure from the group was announced via FAKY's social media, citing her dream of pursuing her acting career. In 2019, Sawai co-starred in the BBC crime drama Giri/Haji. In 2021, she co-starred in the action film F9, directed by Justin Lin. Sawai chose the role of Elle in F9 because she grew up watching the Fast & Furious films and appreciated the diversity of the film's cast. In November 2019, it was announced that Sawai was signed by major U.S. talent agency WME. In October 2020, Sawai was announced to play savvy career woman Naomi in Apple's adaptation of Pachinko, based on the novel by Min Jin Lee, in a role created for the series. Sawai grew up in New Zealand, Hong Kong, and the Philippines, before moving to Japan at the age of 10 due to her father's electronics job. During her childhood, she was influenced by her father to listen to The Beatles and The Carpenters. Her mother, who studied opera, gave her singing lessons.

Anna Sawai plays as Cate Randa in Monarch: Legacy of Monsters.
Anna Sawai is the top #3 member of the cast and appears in 2 episodes.

Kiersey Nicole Clemons (born December 17, 1993) is an American actress, singer, and producer. Her breakout role occurred in the 2015 comedy drama film Dope, where she portrayed Cassandra "Diggy" Andrews. She went on to co-star in Neighbors 2: Sorority Rising (2016), Flatliners (2017), Hearts Beat Loud (2018), Sweetheart (2019), Lady and the Tramp (2019), Scoob! (2020), and Zack Snyder's Justice League (2021). She had recurring roles in numerous television series, including Austin & Ally (2013), Transparent (2014–2015), Extant (2015), and Easy (2016–2019). Clemons also had a main role in the final season of the comedy series Angie Tribeca (2018).

Kiersey Clemons plays as May in Monarch: Legacy of Monsters.
Kiersey Clemons is the top #4 member of the cast and appears in 2 episodes.

Ren Watabe (born 6 March 1999) is a Japanese actor.

Ren Watabe plays as Kentaro Randa in Monarch: Legacy of Monsters.
Ren Watabe is the top #5 member of the cast and appears in 2 episodes.

Mari Yamamoto plays as Keiko Miura in Monarch: Legacy of Monsters.
Mari Yamamoto is the top #6 member of the cast and appears in 2 episodes.

He was born on 29 May 1981 in Evanston, Illinois, USA. He is an actor and writer, known for Workaholics (2011), Game Over, Man! (2018) and The Intern (2015). He has been married to Emma Nesper Holm since September 2011. They have one child.

Anders Holm plays as Young Bill Randa in Monarch: Legacy of Monsters.
Anders Holm is the top #7 member of the cast and appears in 2 episodes.

Elisa Wald-Lasowski (born 15 November 1986) is a French actress, most notable for her film and television work. She grew up in the Netherlands, Algeria and France. She is fluent in French, English, Spanish, Dutch and German.

Elisa Lasowski plays as Duvall in Monarch: Legacy of Monsters.
Elisa Lasowski is the top #8 member of the cast and appears in 2 episodes.

Kurt Vogel Russell (born March 17, 1951) is an American actor. He began acting on television at the age of 12 in the western series The Travels of Jaimie McPheeters (1963–1964). In the late 1960s, he signed a ten-year contract with The Walt Disney Company, where he starred as Dexter Riley in films, such as The Computer Wore Tennis Shoes (1969), Now You See Him, Now You Don't (1972), and The Strongest Man in the World (1975). According to Robert Osborne of Turner Classic Movies, he became the studio's top star of the 1970s. Russell was nominated for a Golden Globe Award for Best Supporting Actor – Motion Picture for his performance in Mike Nichols' Silkwood (1983). In the 1980s, he starred in several films directed by John Carpenter, including anti-hero roles such as army hero-turned-robber Snake Plissken in the futuristic action film Escape from New York (1981), its sequel Escape from L.A. (1996), the horror film The Thing (1982), and the kung-fu comedy action film Big Trouble in Little China (1986). For his portrayal of rock and roll superstar Elvis Presley in Elvis (1979), he was nominated for the Primetime Emmy Award for Outstanding Lead Actor in a Limited or Anthology Series or Movie. Russell starred in various other films, including Used Cars (1980), The Best of Times (1986), Overboard (1987), Tango & Cash (1989), Backdraft (1991), Tombstone (1993), Stargate (1994), Executive Decision (1996), Breakdown (1997), Vanilla Sky (2001), Miracle (2004), Sky High (2005), Death Proof (2007), The Hateful Eight (2015) and Once Upon a Time in Hollywood (2019). He also appeared in the Fast & Furious franchise as Mr. Nobody, having starred in Furious 7 (2015), The Fate of the Furious (2017), and F9 (2021), portrayed Ego in the Marvel Cinematic Universe (MCU) installments Guardians of the Galaxy Vol. 2 (2017) and What If...? (2021), and subsequently portrayed Santa Claus in The Christmas Chronicles (2018) and The Christmas Chronicles 2 (2020).

Kurt Russell plays as Lee Shaw in Monarch: Legacy of Monsters.
Kurt Russell is the top #9 member of the cast and appears in 2 episodes.