26,000,000,000 BBY

In 26,000,000,000 BBY all middle and upper class humans left earth for the andromeda galaxy. the lower class humans were mutated by the pollution and evolved into the Felix. These mutants remained on earth until 13,000,000,000 BBY when a cataclysm occured and the milky way and andromeda galaxies collided, creating the Galaxy.