As Gary reports to Kingsman Headquarters, succeeding his uncle as "Agent Galahad", Sir Giles briefs him about a mission that concerns "trouble in Moscow".

[11] The second volume, Kingsman: The Red Diamond, written by Rob Williams and illustrated by Simon Fraser, was released through Image Comics in September 2017, taking place over the course of one week.

Returning to Kingsman headquarters to retrieve a pill to treat his little brother Ryan's norovirus, an alert comes in from the South African Secret Service (SASS) regarding an encrypted message sent to a wanted hacker named Alias at Times Square in Manhattan.

Upon being restrained, Alias explains that he was trying to shut down the servers in the financial district to protect them from a virus released by the Red Diamond's agent.

The Prime Minister of Britain receives a Betamax tape from the head of the Red Diamond, self-made South African mining magnate Jakobis Du Preez, who explains his plans to replace the world's physical money with gold and jewels; in a separate tape, he invites the "Kings and Queens of the new material world" to a remote location in the Hunan Province, China.

[13] A stand-alone six-page one-shot, Kingsman: The Big Exit, was published in the September/October 2017 issue of Playboy Magazine, written by Rob Williams and illustrated by Ozgur Yildirim.

Set shortly after Brexit, The Big Exit follows Gary "Eggsy" Unwin (retconned to have the same surname as his film counterpart) as he is tasked with safeguarding the controversial "divorce fee" on its journey to Brussels, consisting of £100 billion in solid gold bars, from a group of pro-Brexit terrorists, "The Union Jacks", disguised as French activists to steal the gold back for the UK.

[16] To date, it has been followed by a direct sequel Kingsman: The Golden Circle in 2017,[17] and a spin-off prequel The King's Man in 2021, starring Ralph Fiennes,[18]