Based on what's already known about Kingsman: The Blue Blood, the fourth entry in the ever-growing series of action movies will seethe majority of the existing cast returning for another high-stakes adventure. Despite the franchise's frequent critical acclaim and its huge number of fans across the world, Kingsman: The Blue Blood is said to be the final installment in the main saga, concluding the stories of spies Harry and Eggsy while they are ahead. As such, this movie sees the pair facing their most dangerous and exciting threats of all, bringing their narrative to an explosive climax.
With the exception of the franchise's prequel The King's Man, the Kingsman series follows the story of Gary 'Eggsy' Unwin's initiation into an unconventional organization of international spies, where he's soon taken under the wing of a more experienced agent named Harry Hart.
The pair experience several adventures together throughout the series, with their hilarious dynamic elevating these movies to a new level and integrating some much-needed comedy into the stories. Kingsman: The Blue Blood is no different, focusing closely on these two protagonists and their endless troubles.
Although he's the more experienced agent in Kingsman: The Blue Blood's cast, Harry Hart often finds himself in seemingly unavoidable trouble throughout his journey. He's one of the several leaders of the Kingsman organization, always working to protect the country from outside threats and investigate anything that's deemed too suspicious or unconventional for the government security agencies.
The character is played by British actor Colin Firth, who's playing slightly against type as he's more commonly known for his roles in romantic dramas than action comedies like Kingsman. His most iconic roles include Mark Darcy in Bridget Jones' Diary, Harry in the Mamma Mia movies, and George in A Single Man. Firth also notably won the Oscar for Best Actor in 2010 for his role as King George VI in Tom Hooper's The King's Speech, which also won Best Picture.
Taron Egerton is another actor who is reprising his role as Gary 'Eggsy' Unwin. He is another spy that was recruited into the Kingsman organization whose eagerness and enthusiasm often caused trouble for both himself and his superiors.
While Gary 'Eggsy' Unwin is one of Taron Egerton's memorable roles, he is also known for playing music legend Elton John in 2019's Rocketman (which he was nominated at both the BAFTAs and SAG Awards and actually won at the Golden Globes). The action genre is also somewhat unfamiliar for Egerton, whose other acting credits include professional ski jumper Eddie Edwards in Eddie the Eagle, the titular thief in 2018's Robin Hood, and a singing gorilla in Sing.
Princess Tilde first appeared in Kingsman: The Secret Service as the crown princess of Sweden, and her relationship with Eggsy became one of the franchise's most compelling subplots.
The pair were married at the end of the second movie, with the character returning for Kingsman: The Blue Blood to assist her new husband. She's played by Hanna Alström, a Swedish actor who also appeared in projects such as Sami Blood and The Crown, where she played the characters of Lärarinnan and Heini Wathén respectively.
Before joining the Kingsman: The Blue Blood cast, Tequila made his first appearance in Kingsman: The Golden Circle as a former member of Statesman, the American equivalent of the Kingsman organization. Despite retiring from the agency long ago, his adventures with Harry and Eggsy convinced him to come back, moving to London and joining Kingsman.
Tequila is played by Channing Tatum, who's displayed his comedic abilities countless times before as characters such as Jenko in 21 Jump Street, Mike Lane in Magic Mike, and himself in This Is The End. Tatum's more dramatic acting credits include Cale in White House Down and Mark Schultz in Foxcatcher.
