Langly, Frohike, and Byers were characters ("The Lone Gunmen") who would occasionally appear on The X-Files. They were spun off into their own show called The Lone Gunmen, and when that show was cancelled they would return to The X-Files for an episode called "Jump The Shark," which finishes the cliffhanger the spin-off ended on. They also appeared in the second film "The X-Files: I Want to Believe" as well as in the continuation of The X-Files series (Seasons 10 & 11).