Bio: The smartest man on Earth-2. As Mister 8, Sloan was an ally of Batman, Superman and Wonder Woman until he destroyed several cities in the war against Apokalips, killing millions of enslaved people.
HC vol. 01 - 'The Gathering' HC vol. 02 - 'The Tower of Fate' HC vol. 03 - 'Battle Cry' HC vol. 06 - 'Collision' TPB vol. 01 - 'The Gathering' TPB vol. 02 - 'The Tower of Fate' TPB vol. 05 - 'The Kryptonian' #0 - 'A Hero's Tale' #2 - 'Age of Wonders' #5 - 'Welcome to the Grey!' #6 - 'End Times.' #7 - 'Heaven Sent' #17 - 'The Dark Age Begins' #18 - 'The Dark Age Part 2' #19 - 'The Dark Age Part 3' #21 - 'The Kryptonian Part One' #22 - 'The Kryptonian Part Two' #25 - 'The Kryptonian Part Five' #26 - 'The Kryptonian Part Six' #27 - 'Collision'