Partition (rarely called by his nickname, Checky) is a popular South Korean player, level creator, and YouTuber in Geometry Dash with more than 1,000,000 subscribers on his channel. He regularly hosts multiple video series. His most popular series is the "Full Version" series, where he shows RobTop-created Geometry Dash levels, from Stereo Madness to Fingerdash, which use the full song and the same style as the normal part of the level. The levels are made by different creator.