Supergirl/ Kara Zor-El, Superman's cousin, made her debut in Action Comics #252, which came out in 1959. The cover date is May 1959, but the on-sale date was March 31, 1959. Supergirl's appearance ...

Check out this new look at Superman's take on Ultraman in the X post below. The cover for ‘SUPERMAN: THE OFFICIAL ACTIVITY BOOK’ featuring a new look at Ultraman. Superman, DC Studios' first ...