| Issue | #21 |
| Published | July 2001 |
| Frequency | monthly |
| Cover Price | 1.99 USD; 3.25 CAD |
| Pages | 36 |
| Editing | Bob Schreck (editor); Michael Wright (assistant editor) |
| Characters | Batman [Terry McGinnis]; Justice League Unlimited [Barda; Green Lantern [Kai-Ro]; Superman; Warhawk; Aquagirl [Mareena]] |
| Genre | Superhero |
| Pencils | Brian Stelfreeze (signed) |
| Inks | Brian Stelfreeze (signed) |
| Characters | Batman [Terry McGinnis]; Justice League Unlimited [Barda; Green Lantern [Kai-Ro]; Superman; Warhawk; Aquagirl [Mareena]]; Dana; Black Light |
| Synopsis | Batman helps a short-handed Justice League Unlimited to stop an alien invasion. |
| Genre | Superhero |
| Script | Hilary J. Bader |
| Pencils | Rick Burchett |
| Inks | Dan Davis |
| Colors | Shannon Blanchard; Digital Chameleon |
| Letters | John Costanza |
| Script | Michael Wright |
| Letters | typeset |