For the retard that doesn't know how to use quotations in google searches, here's the excerpt you need
"What happened?
While Brave group bases its current name in the claim that the company has heroes working on its staff, in early 2019 they were the picture of an industry villain. Beginning in April, word started to spread among fans that the “souls” of the Game-bu were being treated terribly by the management of Unlimited. Twitter accounts allegedly belonging to the people behind Game-bu were tweeting about things like being yelled at by management and obligatory all-nighters followed by streaming more the next day. This unhappiness also started leaking into their main accounts, and soon there was an uproar about what was going on behind the scenes.
While management eventually apologized and the project seemed to move forward, there would later be a tweet from one of these “souls” private accounts claiming nothing had changed. Soon thereafter something did change, however – in June, fans noticed that Miria’s voice was no longer the same. Indeed, without warning, she had been replaced. While more uproar and a massive hemorrhaging of fans followed, by the end of September all four had been replaced with new “voice actors” as the company referred to them. Amid all of this, Unlimited released a statement with an apology, but also a curious explanation: according to them, the Game-bu weren’t really VTubers at all, but C-Tubers – Character YouTubers."
https://www.reddit.com/r/VirtualYoutubers/comments/kp728d/fans_fantasy_and_vice_why_the_gamebu_controversy/ 