| Name | Description | Actor |
|---|---|---|
| Gary 'Eggsy' Unwin | A rough kid from the streets of London that turns into a Kingsman agent. | Taron Egerton |
| Harry 'Galahad' Hart | A Kingsman agent and Eggsy's 'mentor'. | Colin Firth |
| Richmond Valentine | The main villain of the movie. He wants to send out a sound signal that makes everyone go into a murderous rage to reduce the population size and safe the world from climate change. | Samuel L. Jackson |
| Hamish 'Merlin' Mycroft | The technical head of the Kingman organisation and the person overseeing the recruitement training. | Mark Strong |
| Roxanne 'Roxy' Morton | One of the candidates for the 'Lancelot' position among the Kingsmen. | Sophie Cookson |
| Gazelle | Personal assistant and right-hand woman to Richmond Valentine. | Sofia Boutella |
| Chester 'Arthur' King | The head of the Kingsman organisation. | Michael Caine |
| Professor Arnold | A professor of climate change that conspires with Valentine to purge the population | Mark Hamill |