| Issue | #21 |
| Published | October 2004 |
| Cover Price | $2.50 |
| Pages | 36 |
| Editing | Peter Tomasi; Stephen Wacker (asst. editor) |
| Characters | Aquaman |
| Genre | Superhero |
| Pencils | Patrick Gleason |
| Inks | Christian Alamy |
| Colors | Nathan Eyring |
| Characters | Aquaman [Arthur Curry]; Aquagirl [Lorena Marquez]; Anton Geist; The Eel [Mort Coolidge] (first appearance); Batman (last page cameo) |
| Synopsis | "Sub Diego" faces a new wave of crime as a meta-powered criminal caught in the collapse finds his powers even more formidable in his watery new home! [per solicitation] |
| Genre | Superhero |
| Script | Will Pfeifer |
| Pencils | Patrick Gleason |
| Inks | Christian Alamy |
| Colors | Nathan Eyring |
| Letters | Jared K. Fletcher |