| Issue | #31 |
| Published | November 2007 [September 26, 2007] |
| Cover Price | 2.99 USD; 3.65 CAD |
| Pages | 36 |
| Editing | Mike Marts; Mike Carlin; Jeanine Schaefer (assistant); Elisabeth Gehrlein (assistant) |
| Characters | Jason Todd; Owlman |
| Genre | Superhero |
| Pencils | Talent Caldwell |
| Inks | Talent Caldwell |
| Colors | Jonathan D. Smith [as J.D. Smith] |
| Characters | The Challengers from Beyond [Green Lantern [Kyle Rayner]; Donna Troy; Bob the Monitor; Jason Todd]; Mary Marvel [Mary Batson]; Holly Robinson; The Jokester (Earth-3); Gsptlsnz; Karate Kid [Val Armorr]; Una [Luornu Durgo]; Buddy Blank; Jimmy Olsen [Mr. Action]; Mickey Cannon; Serling Roquette; Monarch [Nathaniel Adam]; Forerunner [Viza]; Monitors; VILLAINS: Eclipso [Jean Loring]; Crime Society [Ultraman; Superwoman; Power Ring; Owlman] (Earth-3); Mr. Mxyzptlk |
| Synopsis | The Challengers from Beyond versus the Crime Society, the first appearance of The Jokester, Eclipso further seduces Mary Marvel, Mxy disappears, Karate Kid meets Buddy Blank and Cadmus tests Jimmy Olsen. |
| Genre | Superhero |
| Script | Paul Dini (head writer); Sean McKeever |
| Pencils | Keith Giffen (breakdowns); Manuel Garcia |
| Inks | Rodney Ramos |
| Colors | Hi-Fi |
| Letters | Jared K. Fletcher |
| Characters | Joker (origin); Batman [Bruce Wayne] |
| Synopsis | The origin of the Joker. |
| Genre | Superhero |
| Script | Mark Waid |
| Pencils | Brian Bolland |
| Inks | Brian Bolland |
| Colors | Matt Hollingsworth |
| Letters | Jared K. Fletcher |
| Editing | Michael Siglain; Elisabeth V. Gehrlein |
| Characters | Tiny Titans |
| Script | Jann Jones |
| Pencils | Art Baltazar; ? |
| Inks | Art Baltazar; ? |
| Colors | Art Baltazar; ? |
| Letters | typeset |
| Notes | Jann Jones talks about the new Johnny DC comics. Hot list - ACTION COMICS #856, GREEN LANTERN CORPS #16 and SUPERGIRL AND THE LEGION OF SUPER-HEROES #34. House ad for COUNTDOWN #30. |