The Bizarro World is a fictional planet appearing in American comic books published by DC Comics. Introduced in the early 1960s, Htrae is a cube-shaped planet, home to Bizarro and companions, all of whom were initially Bizarro versions of Superman, Lois Lane and their children. Later, other Bizarros were added. Among them was Batzarro, the World's Worst Detective.

Bizarro is a supervillain or anti-hero appearing in American comic books published by DC Comics. The character was created by writer Otto Binder and artist George Papp as a "mirror image" of Superman, and first appeared in Superboy #68 (1958). Debuting in the Silver Age of Comic Books, the character has often been portrayed as an antagonist to Superman, though on occasion he also takes on an antihero role.