Read more about The Jokester at: Wikipedia

Official Site: DC Comics

Earth-Three is a fictional alternate universe set in the . It is the Earth of an alternate reality in the DC Multiverse. It first appeared in Justice League of America #29 (1964).

Its history is a mirror image to the Earth we know. On Earth-Three, Christopher Columbus was an American who discovered Europe; England (a colony of America) won freedom in a reversed form of the Revolutionary War (with Washington surrendering his sword to Cornwallis); President John Wilkes Booth was assassinated by actor Abraham Lincoln; and Lex Luthor (here called Alexander Luthor) is the only superhero on an Earth otherwise occupied entirely by villains, most of whom are reversed analogues of heroes on other DC Earths. The Earth-Three analogue to the Justice League is the Crime Syndicate of America.

Earth-Three is destroyed by waves of antimatter in the opening scenes of the Crisis on Infinite Earths. The sole survivor is the son of Alexander and Lois Lane Luthor, Alexander Luthor, Jr.

In post-Crisis, pre-52 DC continuity, the multiverse has been merged into one single universe. Most of Earth-Three's history survives in the form of a similar antimatter Earth of JLA: Earth 2 in the antimatter universe of Qward. There are some new departures, however. At the end of their re-introduction, Amerika had launched a nuclear strike on London, against Britain's independence movement.

The Jokester has not been a contender in any CBUB matches.