career leaping tall buildings rather than flying, had heat from his x-ray vision and not heat vision as the Earth-One hero did. In addition, he had a very limited ability to change his facial features to resemble other men of similar height and build that the other Superman lacked. The Golden Age Superman (Kal-L) is the first primary superhero of Earth-Two, who began his career as an adult and emerges just before World War II. He is a member of the Justice Society and, during World War II, the All-Star Squadron. As Clark Kent, he works for the Daily Star as a reporter and eventually becomes Editor-in-Chief. Clark eventually marries Lois Lane and settles down with her for several decades, and when Kal-L's long-lost cousin Power Girl arrives on Earth, they become her surrogate parents. Kal-L is erased from Earth's history after the events of Crisis on Infinite Earths, but survives and enters a "paradise" dimension, where he remains until the events of Infinite Crisis. Shortly after his wife passes away, Kal-L dies at the conclusion of Infinite Crisis while battling Superboy-Prime. His main two foes are the Ultra-Humanite and the red-haired Lex Luthor. In addition, his "S" symbol on his chest is generally drawn in a less distinctive manner. While the Golden Age Superman is generally viewed as weaker than his Earth-One counterpart, he did battle the Earth-One Superman to a standstill in Justice League of America #74. Stories taking place in the 1970s and 1980s featuring this version of Superman are usually labelled Earth-Two stories. Silver Age 1950s-1971 The more significant differences between the Golden Age version (later equated with Kal-L of Earth-Two) and Silver Age version (Kal-El of Earth-One) of Superman includes the Silver Age Kal-El begins his public, costumed career as Superboy at the age of eight, more than a decade before nearly all other Earth-One heroes. Superboy only finds super-powered peers in the 30th-century Legion of Super-Heroes, though he also meets as a teenager Earth-One's only other major superpowered hero, "Aquaboy" (the teenaged Aquaman). Luthor meets Superboy in Smallville when they are teens; the two are briefly friends before they become mortal enemies, years before they become adults. As an adult, Clark Kent works at the Daily Planet and Superman is a founding member of the Justice League of America The Silver Age Superman also has greatly enhanced powers compared to Kal-L. His main villain