,
Vera Farmiga,
O'Shea Jackson Jr.,
Thomas Middleditch, and
Michael Dougherty speaking at the 2018
San Diego Comic Con. •
Kyle Chandler as Dr. Mark Russell:Emma's ex-husband, Madison's father, an
animal behavior and communication specialist who formerly worked for Monarch, and co-inventor of the "Orca", a device that enables communication with the Titans, but can also "potentially control them using their
bioacoustics on a
sonar level". After suffering the loss of his son, Mark has an unfavorable opinion of the Titans, Godzilla in particular. Despite this, he joins a rescue mission along with Dr. Serizawa and Dr. Graham to save Emma and Madison from Alan Jonah and his terrorist group. Chandler spoke of the film's themes being about "healing the planet". •
Vera Farmiga as Dr. Emma Russell:Mark's ex-wife, Madison's mother and a renegade Monarch
paleobiologist with a history of
environmental activism in league with
eco-terrorist Alan Jonah. She is the co-inventor of the Orca. Unlike Mark, Emma believes that humans and Titans can co-exist peacefully. She does not see Godzilla as evil, but as a potential savior in an age of catastrophic
climate change. Farmiga stated that Emma views Godzilla in the same manner one views Mother Nature, specifying, "when these devastating natural occurrences come, it's because the environment has been mistreated and is showing righteous anger." Emma and Madison conspire with a mysterious organization interested in her technology, with their own plans for the creatures. Farmiga described her character as being a "DJ for the monsters", stating, "she has figured out a way to communicate with the creatures", she also described the film being about "saving the environment". Farmiga noted that while the previous film focused on a father/son relationship,
King of the Monsters focuses on a mother/daughter relationship. Due to this, Farmiga believes the film may pass the
Bechdel test. •
Millie Bobby Brown as Madison Russell:Emma and Mark's 12-year-old daughter. Scientifically gifted like her parents, Madison seeks to follow in her mother's footsteps. Although she is a co-conspirator in her mother's plan to release the Titans, Madison is more conflicted about it and Emma tricked her into it with lies and half-truths, claiming that it was to help people and save the world in Andrew's memory. •
Lexi Rabe as Young Madison Russell •
Bradley Whitford as Dr. Rick Stanton:A crypto-
sonographer working for Monarch. Dougherty confirmed that Dr. Stanton is loosely modeled after
Rick Sanchez from
Rick and Morty. Dougherty had the character "drink a lot" to keep the character in line with the spirit of Sanchez. •
Sally Hawkins as Dr. Vivienne Graham:A
paleozoologist working for Monarch as Serizawa's right-hand woman. Hawkins reprises her role from
Godzilla (2014). •
Charles Dance as Alan Jonah:A former British Army
SAS Colonel and
MI-6 agent who
defected after becoming disillusioned by humanity during his time in the service. Obsessed with "
leveling the global playing field" and restoring the natural order, he became the mercenary leader of an anarchist
eco-terrorist group funded through the
trafficking of Titan DNA. He conspires with Emma to help her use the Orca to further their shared agenda. Dougherty described Jonah as a mysterious character with conflicting ideas about the Titans' role in the world, believing that mankind has damaged the planet and that bringing back the Titans will potentially set things right. •
Thomas Middleditch as Sam Coleman:Monarch's Director of Technology, leader on the development of the Monarch Sciences network, and communications
liaison with the U.S. government. •
Aisha Hinds as Colonel Diane Foster:A decorated
Green Beret and the leader of the G-Team, the special military branch established by Monarch specializing in battles involving Titans if necessary. •
O'Shea Jackson Jr. as Jackson Barnes:A Green Beret
chief warrant officer who is a member of the G-Team •
David Strathairn as Admiral William Stenz:An Admiral in the
7th Fleet of the United States Navy. He is the commander of the U.S. Navy task force and was previously in charge of tracking down the
MUTOs. Strathairn reprises his role from
Godzilla (2014). •
Ken Watanabe as
Dr. Ishirō Serizawa:A high-ranking scientist working for Monarch. His father Eiji Serizawa was one of Monarch's founding members, so he is seen by many as the agency's de facto leader. Watanabe reprises his role from
Godzilla (2014). Watanabe noted the film's themes, stating, "In the 21st century we need to think about natural disasters. This creature is symbolic of that natural disaster. We cannot control them, but we must live on this planet." •
Zhang Ziyi as Dr. Ilene Chen and Dr. Ling Chen:Dr. Ilene Chen is a
mythologist working for Monarch, specializing in deciphering the mythological backgrounds of the Titans in connection with tales and legends throughout history. With her twin sister Dr. Ling Chen, Ilene is a third generation Monarch operative in her family, having joined the agency like their grandmother and mother before them. The Chens come from several generations of twins in their family, with an early pair visiting Infant Island, depicted in
Mothra (1961) as Mothra's home. Dougherty intended the Chen sisters and their connection to Mothra to be a modernized version of
the Shobijin, Mothra's twin fairies, explaining, "It was important to me to find ways to modernize the ideas that she has followers. Modernize the priestesses. There are still certain realms of believability to keep in take. You have to ease people into the more fantastical aspects." He noted that the twins were a "perfect example" showing humans and monsters cooperating and forming a "symbiotic relationship with each other". Dougherty also felt that the twins should be portrayed by Asian actresses, same as in the Toho films.
Joe Morton appears as an older Dr. Houston Brooks, a character that originally appeared in
Kong: Skull Island, where he was portrayed by
Corey Hawkins. Additionally,
CCH Pounder portrays Senator Williams,
Anthony Ramos portrays
Staff Sergeant Anthony Martinez,
Elizabeth Ludlow plays First Lieutenant Lauren Griffin,
Jonathan Howard portrays Asher Jonah, and
Randy Havens portrays Dr. Tim Mancini.
Tyler Crumley plays Mark and Emma's son and Madison's brother Andrew.
Kevin Shinick cameos as a weatherman. Through
motion capture,
T.J. Storm reprises his role as
Godzilla, while Jason Liles, Alan Maxson, and Richard Dorton portray the heads of
King Ghidorah. Liles also portrays
Rodan via motion capture. Dougherty, co-writer Zach Shields,
Seth Green,
Clare Grant,
Eli Roth,
Stephen Moyer, and Jermaine Turner make uncredited appearances as members of a fighter jet squadron attacked by Rodan. ==Production==