He is Negative Mario from the future. He was meant to be a slave to Dark Mario, but he claimed in the future Dark Mario would be his slave, which is true. Later Eyepatch Weegee decides to shoot him, but forgets to shoot him in the head. Because it failed he decided to make him a slave as well. So he was forced to help Eyepatch Weegee kill Dark Mario clones. He was later gifted a Golden Gun.