Mr. Poolcheck

voiced by Michael Rianda) - Mr. Poolcheck is the head lifeguard at the Gravity Falls Pool, although he acts more like a drill instructor. He was Wendy's boss at the Gravity Falls Pool and later agrees to hire Dipper. At first he takes a liking to Dipper, but comes to realize both Wendy and Dipper do not take the job of lifeguard seriously enough. He fires them both near the conclusion of the episode.