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
The Death of Superman to do so because of an editorial mandate barring characters from DC's mature comics line appearing in mainstream books like "Superman". Kesel replaced him afterward. Because Jurgens did not want to simply use Superman's classic design when he was revived, he gave him long hair. The teams also deepened the red and blue of Superman's costume to signify that things would not be entirely the same for him. Superman briefly wears a black suit after his revival; this design came from a sketch Bogdanove made at a meeting. "The Death of Superman" was first alluded to in Simonson's "Superman: The