"They Might Be Giants"
Triangle 1998-15.1. Continued from Superman: The Man of Steel #78 (15) and continues in Challengers of the Unknown (1997) #15 (15.2).
Cover (left) connects with Superman: The man of Steel #78 (center) and Challengers of the Unknown (1997) #15 (right) to form the top row of a larger puzzle image from all nine Millennium Giant issues.