Old Man McGucket is the "local kook" of Gravity Falls. Despite his apparent insanity and stereotypically hill-billy demeanor, Old Man McGucket is a technical mastermind, capable of creating massive, complex animatronics (such as a robotic sea monster or a homicidal robot dinosaur). His son works at the lake, but the two seem to have a strained relationship, adding to McGucket's insanity and need for attention.