In which issue did this fictional superhero in the DC Comics Universe, who was killed by Captain Cold, make his first full appearance?
Captain Cold Captain Cold (Leonard Snart) is a fictional supervillain appearing in American comic books published by DC Comics. Captain Cold is the leader of the Rogues, a loose criminal association, as well as the older brother of Golden Glider. He also has served as a bitter enemy to the Silver Age Flash Barry Allen, both enemy and grudging friend to the third Flash Wally West, and one of the killers of the fourth Flash Bart Allen.
Superboy-Prime Superboy-Prime, (Clark Kent, born Kal-El) also known as Superman-Prime or simply Prime, is a DC Comics superhero turned supervillain, and one of several alternate Supermen. The character first appeared in "DC Comics Presents" #87 (November 1985), and was created by Elliot S! Maggin and Curt Swan (based upon the original Superboy character by Jerry Siegel and Joe Shuster).