There is one true big dawg when it comes to the home brewed hax. Not some copy paster wannabe like Tyen or spreader of another man's work like Jupe.
Seek out "Dr. Gotcha". I've seen him break Marvel Rivals (mentioned first ofc) and Pantheon dev teams balls many times over. When Visionary Realms banned him, he got into their shit and literally unbanned himself. I wish I was making up a Sox story here. In all my years I've never seen one as good as him.
That being said, cheating at video games should result in damage to a business civil liability. I fucken hate cheatin clowns. Back in the arcade days the gang woulda thrown someone like that out themselves with the blessing of obese long haired coin dispenser man.