The 120th century is the era that Flash, Green Lantern and Superman came to in search of the Legion of Doom, who they were seeking to bring to justice. Little did they know, was that the Legion was hiding out in the 40th century, but when they arrived in the year 11978, the Super Friends located a library, and they located a history book that informed them of the incident in which the Legion took over the Milky Way Galaxy in the fortieth century.