"Gaster Hub" typically refers to community-driven platforms or collections of media centered around W. D. Gaster , the enigmatic former Royal Scientist from the game
In the game's lore, Gaster is a "shattered" figure who exists across time and space after falling into his own creation, the Gaster Hub
If you are looking for a specific story or a technical tool (like the Gaster checkm8 utility ), please provide more details! or more about his in-game secrets custom boss fights
: Communities on platforms like Roblox or Steam share "Gaster Blasters", custom boss fights, and guides for finding secret rooms like Gaster Hub