Role in the series
He is first seen in Dipper's story during "Bottomless Pit!" sitting at the Skull Fracture bar. When Tats calls for an arms against Dipper (for being a prank caller), he joins in the chase along with the rest of the bar's occupants.
Poolcheck makes a bigger role in "The Deep End", he is Wendy's boss at the Gravity Falls Pool and later agrees to hire on 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. Near the conclusion of the episode, he fires both Wendy (offscreen) and Dipper. He also finds out Soos has been taking the pool ducks and he chases after him.