Adventures of Superman — DC Comics
Issue: #630
While saving some high-school hostages from a villain called Ruin, Superman gets a visit from the pesky pixie from the fifth dimension, Mr. Mxyzptlk. He warns big blue of an oncoming crisis, but Superman doesn't buy it. Then he returns Supes to fight Ruin.
First appearances: Damon Carter, Miss Colby, Alexandra Allston, Alex Allston
Creators: Eddie Berganza, Gene Ha, Greg Rucka, Greg Rucka, Nick J. Napolitano, Richard Horie, Tanya Horie, Matthew Clark, Mark Nelson
Characters: Superman, Lois Lane, Mr. Mxyzptlk, Firestorm, Lt. Lupe Leocadio, Emil Hamilton, Damon Carter, Barton, Gable, Miss Colby, Alexandra Allston, Beau Wright, Alex Allston