Superman characters code names

Supergirl is the name of several superheroines appearing in American comic books published by DC Comics. The original Supergirl is Kara Zor-El, the cousin of superhero Superman. The character made her first appearance in Action Comics #252 (May 1959) and was created by Otto Binder and Al Plastino.

Nightwing is a superhero alias used by multiple characters in American comic books published by DC Comics. The most prominent bearer is Dick Grayson, the original Robin, who adopts the Nightwing identity to assert his independence from Batman. The name has its origins in Superman comics, where it is used by Superman in the bottled city of Kandor, a nightwing being a Kryptonian bird analogous to a bat.

Superboy is an identity used by several superheroes appearing in American comic books published by DC Comics. These characters have been featured in several eponymous comic series, in addition to Adventure Comics and other series featuring teenage superhero groups.

Superwoman is the name of several fictional characters in DC Comics. Most of them are, like Supergirl, women with powers similar to those of Superman, such as flight, invulnerability, and enhanced strength.