Brain Freezer (Voiced by Louis Chirillo in Seasons 1-4, Bill Mondy (Season 5 onwards)is a recurring antagonist and he is the former coffee guy of the Institute of Technology. As of Johnnycicle, he is no longer evil and doesn't freeze Johnny anymore. In Lawn Gone Johnny, he turns evil again for unknown reasons. His real name was never revealed. He first appeared in Johnny vs Brain Freezer.