Gideon Gleeful

Gideon Charles Gleeful (born early July 2002 in Gravity Falls, Oregon[5]) 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 series' main antagonist throughout Season 1, until his eventual defeat and incarceration in the last episode. He was largely absent from the first half of Season 2 but returned during the later part of the season. Despite being an enemy and antagonist throughout the majority of the show, he later realizes his former ways are wrong and is trying to restart his life as a good, regular kid. He is the pentagram with an eye on the Zodiac.