Gideon Gleeful is a fraudulent child psychic, whose hunger for ultimate power motivates him to manipulate and intimidate others into giving him what he wants. A sworn enemy of the Pines family, he serves as the main antagonist in Season 1, until his eventual defeat and incarceration. Li'l Gideon is a self-proclaimed television psychic whose real mission is to take down his competition, the Mystery Shack. He uses his "cuteness" as an advantage to get what he wants and admits that people have a hard time saying "no" to him because of it. He is manipulative, cunning, and sly. He speaks in a Southern American dialect. He is spoiled, ungrateful, bratty, selfish, and abusive towards his parents in ways such as throwing ice cream, yelling at them, making a fuss, and breaking lamps. He can also be very rude, obnoxious, and argumentative. He is deeply arrogant, believing himself to be above everyone else in Gravity Falls. He is extremely manipulative, lying to the residents of Gravity Falls to get them to do what he wants. Due to getting almost everything he wants, Gideon can become severely unhinged when something is beyond his reach. He refuses to accept the fact that Mabel wants nothing to do with him, being in complete denial about his feelings.