Technical49

Technical49 (or simply Technical), is an extremely skilled American player in Geometry Dash. He is the first person to beat the entire top 6 demon levels in the game without using the FPS-bypass hack and also first on 144hz, said levels being Bloodlust, Spacial Rend, Plasma Pulse Finale, Gamma, Sonic Wave and Yatagarasu. He also verified Sigma, the official sequel to Gamma (It is most likely around the same difficulty)
 * He is the set verifier for Sonic Wave Infinity by Riot. (a harder rebirth of Sonic Wave) this, if unnerfed, is most likely much more difficult than Zodiac, and may even rival Tartarus.

Trivia

 * He thinks Plasma Pulse Finale is the worst level in the top 5.
 * He thinks Bloodlust is the clear top 1 hardest out of the rated demons in the game so far.
 * He uses his voice in all of his videos where he is often in voice calls, he has also done a face reveal and shows his face in a couple of his videos.
 * He thinks Kowareta is not rate-worthy.
 * He has confirmed that, despite popular belief, Sigma is not harder than Bloodlust.