Challengers of the Unknown (1997-1998) Writers Steven Grant • Len Kaminski Artist John Paul Leon Genres Action Exploration Sci-Fi Themes Quest/Expedition Road Trip SuperTeams A New Generation of Challengers Challengers of the Unknown Volume 3 #1 Challengers of the Unknown Volume 3 #2 Challengers of the Unknown Volume 3 #3 Challengers of the Unknown Volume 3 #4 Challengers of the Unknown Volume 3 #5 Challengers of the Unknown Volume 3 #6 Last Days Challengers of the Unknown Volume 3 #7 Challengers of the Unknown Volume 3 #8 Challengers of the Unknown Volume 3 #9 Broken Spirits and Dark Waters Challengers of the Unknown Volume 3 #10 Challengers of the Unknown Volume 3 #11 Challengers of the Unknown Volume 3 #12 Challengers of the Unknown Volume 3 #13 Challengers of the Unknown Volume 3 #14 Millennium Giants Superman: The Man of Steel Volume 1 #78 Aquaman Volume 5 #43 Superman Volume 2 #134 Challengers of the Unknown Volume 3 #15 Teen Titans Volume 2 #19 Supergirl Volume 4 #20 Adventures of Superman Volume 1 #557 Steel Volume 2 #50 Action Comics Volume 1 #744 The Final Mystery Challengers of the Unknown Volume 3 #16 Challengers of the Unknown Volume 3 #17 Challengers of the Unknown Volume 3 #18