Jim Johnston is a writer and editor of comics and role-playing fanzines based in Cookstown, County Tyrone.

He published Perchance, the roleplaying gamer zine published in early 1992, and distributed at several Belfast specialist stores. It was an A5, 32 page photocopied piece quite indicative of the basics of zine publishing. Edited by Johnston, it included short science-fiction stories and articles on role-playing strategies. Though Perchance didn't include any comics work, it did feature a front cover illustration by John McCrea and P. J. Holden, and a back cover by Holden. The first short story was by Hilary Robinson, with illustrations by Gary Hamilton. Other contributors to Perchance included Ed McVeigh and Colin Gordon. Illustrators included Tim Tozer, Patrick J. Heron, Gary Thompson, Allen Fox and David Boatright.

He went on to co-found and edit the comics anthology Domain, with art editor Bob Corcoran and consulting editor Jonathan Turner, which ran for three issues in 1994-1995. Johnston wrote three strips for the magazine: "Lovatt & Crouch", illustrated by Gary Hamilton, and "The Steed of Krall" and "Roachworld", both by Paul J. Whittaker.

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