Era Cronos is a scientist from the 25th century, living in the southern region of the fictional "Americas Unidas" (translated "United Americas") which is the entire American continent unified in a single nation, along with his wife Roma. Among his inventions are the Time-visor, a TV like device which allows him to see and study any event through space and time, and his Time Machine, which allows him to travel to any place and time in history, which he does often to fight crime and injustice. Cronos has been present in several key moments of human history, such as the discovery of fire by the first human beings, the disembark of Vikings in America well before Columbus, and the slave uprising led by Spartacus in ancient Rome, among others but he always managed to remain anonymous and out of