Bizarro is a doppelgΓ€nger of Superman.
Due to a somewhat disjointed continuity, several versions of Bizarro have appeared in DC comic books, all of them inversions of Superman with gray or chalk-white skin, a twisted sense of logic which typically manifests as a superficial "opposite" of anything Superman would do or say and a resultant speech pattern ("Me am going to kill you" would mean "I will save you" in Bizarro speech). Due to his imperfections, Bizarro is frequently a foe of Superman, but sometimes finds himself in the role of hero (in this case, an anti-hero).
It has been suggested by both comic book fans and anthropologists that the Bizarro character, who is the opposite of Superman and all he stands for, was a metaphor for the Soviet Union at a time when Superman was seen as the embodiment of the United States in the 1950s. The Soviet reference was likely akin to the fact that the USSR was athetically prominent in events like the Olympics and had a military that made great contributions to winning the Second World War, but in civilian life many aspects of the Soviet economy were dysfunctional.
The original Bizarro was created when Superman was exposed to a "duplicate ray." In accordance with the science fiction concepts of Superman stories of the era, Bizarro relocated to "the Bizarro world," a cubical planet called Htrae which operated under "Bizarro logic" (it was a crime to do anything good or right) and which Bizarro populated with inverted versions of Supermanβs supporting cast and other DC heroes.