KrmaL

 Krazyman50 is a North American player who has completed many insanely hard demon levels such as Colorful Overnight, Stalemate, Supersonic, 8o, Phobos, and Poltergeist. On the 30th of October, 2015 he verified a level called Unarmed, and on the 12th of December he verified a harder remake of it called Rearmed. He patched a few bugs in Rearmed several days after the release. Later on he verified Conical Depression. On May 12, 2016. He has verified Phobos (nerfed version), which was previously a hacked megacollaboration. Which he considered as the hardest level he has ever beaten. He was also the first person to record a video of Switchblade, the hardest 8* level. On May 31st, 2016, he has verified a level called Heartbeat.

Levels

 * Demon Levels
 * Phobos (megacollab with 20 creators): a previously downgraded mega-collaboration hosted by GMTSean, the level was verified and was uploaded on Krazy's account.
 * Rearmed: A modified version of his old level named, Unarmed. A demon level.
 * Invisible Deadlocked: An invisible version of Deadlocked.
 * Lit Fuse his first solo-level.
 * Heartbeat: Designed by AncientAnubis and AirSwipe.
 * Conical Depression: A n extreme demon with 1.0 decoration, has ridiculous amounts of crucial timings, mashing, etc.
 * Normal Levels
 * Dont Rate This Level
 * Alive (a collab with Galzo)
 * Unrated Levels
 * Invisible Clubstep
 * Invisible ToE2
 * Old Lady
 * Corrupt Clutter: A recolored copy of Crimson Clutter. Its purple color scheme suggests a reference to the Corruption biome in Terraria.
 * Crimson Clutterfunk: Yet another copy of Crimson Clutter, this time with the soundtrack changed to Clutterfunk (full Newgrounds version)
 * Deleted Levels
 * Unarmed: the old (1.9) version of Rearmed.
 * Krazyman50: his "impossible" level, verified with a glitch similar to the blue orb glitch. It has columns of rotating blocks. Named after himself.
 * Many more levels, including random uploaded levels like "DansGame" and "Every Auto Ever."
 * Every single "Invisible" level except Clubstep, ToE2, and Deadlocked.

Trivia

 * He has created a literally invisible version of the main levels of Geometry Dash. Some of them remained unrated, while Invisible Deadlocked was the only one that gets a rating.
 * He has created custom song remixes/mashups for Ultimate Demon Mix and Obscurum.
 * Krazyman50 finds it extremely annoying when people continually badger him with the "e" and ":^)" memes that aren't even his own memes and died out long ago and are still being used as a desperate cry for attention to him when they're used with a lack of context and knowledge behind the inside jokes.