Issue: #21
Supergirl and Superman team up to battle the threat of a man composed of Kryptonite. And if that isn't enough, they also have to deal with a mysterious alien race known as the Seeders in "Curse of the Kryptonite-Man."What could be worse than a revenge-crazed living Kryptonite reactor? The answer may surprise you!Notes:The story continued from Superman #397.
Creators: Paul Kupperberg, Julius Schwartz, Gene D'Angelo, Bob Oksner, Milt Snapinn, E. Nelson Bridwell, Eduardo Barreto
Characters: Superman, Supergirl, Kryptonite Man