His given name is Ryan Joseph Gennett and the story goes that he earned the nickname Scooter when he was 5 years old and his mother took him to the police station in order to scare him into wearing his seat belt.
"I told the cops Scooter Gennett because that was my favorite Muppet Babies character," he said back in 2014. "I kind of just used it as an alias, I thought I would get in trouble if I told them my real name."
Now the name Scooter Gennett goes into the record books as just the 17th player to hit four home runs in a game, the first since Josh Hamilton in 2012.