Ggb0y (formerly Gboy) is a popular Finnish creator and player in Geometry Dash. He is the creator of Cataclysm, which was the hardest demon in the game for a long time and even considered impossible at one point. Ggb0y has also uploaded previews of other levels on YouTube. However, most of them were ditched soon afterwards. In addition, he has created numerous other demons such as Hyper Fantasy, Neon Overdrive, and MiracleFunk, and also made the popular level MLChristmas. With the help of Riot, he updated Cataclysm and made it harder, fixed bugs, and added three user coins into the level. He also recently released an extreme demon called Infernal Abyss, which was verified by YGYoshi.
He has progress videos of Cataclysm on his YouTube account but never had an actual completion of the level, so rumours began accusing him for hacking. He indeed hacked the level in 1.9 as he said at the end of the Cataclysm 2.0 update, which was verified by Riot.
Even though he's not creating levels anymore, he still participated in big megacollabs like Subsonic.
His level Hyper Fantasy was created in 2.5 days.
Nowadays he plays Fortnite Battle Royale and Overwatch.