ExZ is an notorious BLOX City/ROBLOX hacker. He compromised the user Voltzy on the 22nd of December 2016 and stole his collectibles. On the 31st of December he then compromised Fancy and stole all his collectibles, including his two Lumines.
ExZ is one of the richest users on the site.
Known members of the ExZ are Exertioz, Alejandro and dog.