They are first encountered just as Marrissa, Primrose Everdeen and Peeta Peeta Sandwich Eater have finished off Frank Fifteen, and are seen together with Haymish Abernathy, cheering on the team. At the time, they are in disguise as "reds", but once they return to report to Abraman, they take off their disguise. They then inform Abraman that Marrissa is in trouble, and Abraman suggests retrieving the TEEN FORTRESS 2.
Abraman thus gives them a time machine, which both agents use to go back in time via the time streem. Once they end up in the past, at first they meet Gabe Jonson and Ratman, who know that the TEEN FORTRESS 2 are at college, but cannot name it. They do, however, point to Gale Thunderpants, who does know. Therefore, the agents encounter Gale in the bathroom, after defeating a monster from Fallout.
While Gale is looking for Wheatly and J and K are unable to assist him, he does inform them that the TEEN FORTRESS 2 are currently at Half-Life College. Therefore, to get there, J and K steal Ring Mater's car.
Once they are at Half-Life College, they encounter Gaz, Demonman's girlfriend, who informs that Half-Life College has been taken over by Alexander. J and K thus defeat Alexander and the monsters he brought with him, locate the TEEN FORTRESS 2 and bring them to the future.
J and K do not show up again until the very end of THE MARRISSA GAMES, when they appear through a time portal, together with Abraman, who has decided to become the president in the future. The fate of J and K themselves is unclear.
- THE MARRISSA GAMES (First appearance)