Cast of Kingsman: The Secret Service

Colin Firth plays the role of Harry Hart, also known as Galahad, a suave and experienced Kingsman agent who takes Eggsy under his wing.

Samuel L. Jackson portrays the character Valentine, a sophisticated yet villainous tech billionaire with a unique plan for world domination.

Mark Strong stars as Merlin, the no-nonsense senior Kingsman agent responsible for training and guiding the recruits.

Taron Egerton plays the protagonist, Gary 'Eggsy' Unwin, a street-smart troublemaker who gets recruited into the secret service.

Sophie Cookson portrays Roxy, a fellow Kingsman trainee alongside Eggsy, who proves to be a skilled and determined counterpart.

Sofia Boutella takes on the role of Gazelle, Valentine's deadly henchwoman with lethal prosthetic legs.

Michael Caine plays the character Arthur, the head of the Kingsman organization and a mentor figure to the agents.

Mark Hamill makes a cameo as Professor Arnold, a kidnapped celebrity who becomes entangled in Valentine's plan.

Samantha Womack portrays Michelle Unwin, Eggsy's caring but troubled mother who supports him throughout his journey.

Jonno Davies plays Lee Unwin, Eggsy's late father who was a former Kingsman agent with a significant impact on his son's life.

Jack Davenport appears as Lancelot, a skilled Kingsman agent who meets a tragic fate early in the film.

Adrian Quinton portrays the Terrorist, an initial test subject of Valentine's technology who meets a gruesome end in the film's opening scene.