Hi there Anon! No one here has so I am so happy you asked! I got it from my all time favourite video game series titled Galerians! The series was a sci-fi survival action horror game that revolved around psychic powers and saving the world from an evil AI, I still love it to this day!! It had twists and turns and was so compelling for me I fell in love instantly and knew I had to incorporate into a username. The 57 came because I needed something to set myself apart from the other Galerians users back in the day and it just rolled off the tongue easier than other numbers. Thank you so much for asking, I hope you have a wonderful day anon, you brought back many happy memories!! :3 💞💞