ROBLOX

ROBLOX is the presumed main antagonist of Guesty. He is the leader of Robloxia and caused all Guests to be banned and reanimate.

Story
In School - Chapter 1, he is shown pressing the button in an unknown location with the Ban Hammer Melee. He then laughs maniacally after he presses it and is never shown again in the chapter.

In Library - Chapter 3, you mention that he must be eager to catch Bacon Kid after one of Roblox's jets kidnap Bacon Kid.

In Aquarium - Chapter 4, you repeat the same thing from Library - Chapter 3, and Guest 404 also mentions him establishing several bases across Robloxia.

Appearance
He has a simple black outfit with the word ROBLOX on its right side, a cap on his head that also says ROBLOX, and white sneakers.

His character counterpart, Roblox, is him but in a bulkier build, parts of his left face ripped off which is exposing his skull, left arm torn off, and ribs exposed. His glow is purple, his rank is a Godly, and currently shares the same jumpscare and theme as Guesty.