Alternative versions of Superman establish a new continuity for DC, affecting not only Superman, but all of the DC Comics characters. The versions of Superman from this time period are traditionally divided into three main periods. The first version of Superman began being published by DC Comics in 1938 appearing in "Action Comics" #1. To explain discrepancies in the aging of Superman across several decades, his earliest stories were retroactively portrayed as having taken place on an alternative world called Earth-Two. These stories take place from 1938 until the late 1950s, although the exact dividing line is unclear and some stories happened identically to
1940s in comics under the imprint Frank Comunale Publications. The company would begin publishing under the Charlton name in 1946. Superboy, the adventures of Superman as a boy, first appears in "More Fun Comics" #101. The character is currently the subject of a legal battle between Time Warner, the owner of DC Comics, and the estate of Jerry Siegel. The Siegel estate claims that the original "Superboy" character published by DC Comics is an independent creation that used ideas from Jerry Siegel's original rejected pitch and was created without his consent. The All-Winners Squad, the first superhero team in the Marvel Universe, first