When the JLAers who previously fought the Unimaginable suddenly double in size, the alien Dr. Bendorion comes to Earth to help cure them. But Batman suspects that Dr. Bendorion is not what he seems, and he is revealed as the Unimaginable.
Mark Waid, Geoff Johns, John Broome, Gardner Fox, Len Wein, Cary Bates, Bob Kanigher, Marv Wolfman, Francis Manapul, Brian Buccellato, William Messner-Loebs, Scott Kolins, Mike Wieringo, Alberto Dose, Ethan Van Sciver, Carmine Infantino, Ross Andru, Irv Novick, Andy Kubert, Harry Lampert, Everett Hibbard, Mike Collins & George P�rez
Gardner Fox, Bob Kanigher, Archie Goodwin, Steve Englehart, Gil Kane, Carmine Infantino, Joe Kubert, Sheldon Moldoff, Walt Simonson, Howard Sherman, Peter Riss & Sal Amendola