| Release: | Oct 2007 |
| Cover: | Oct 2007 |
Countdown - Grudge Match - Grudge Match
| Release: | Oct 2007 |
| Cover: | Oct 2007 |
As he prepares to take the leadership of the Outsiders from Nightwing, Batman contemplates the team's lineup. He's unsure of whether several of the current members have what it takes to be on the team he envisions. To find out if Captain Boomerang has what it takes, he sends Owen and Nightwing to a S.T.A.R. Labs orbital facility. Recently, all contact with the station personnel was lost, and the station itself went dark. All this happened only hours after the station made contact with the entity known as Chemo.
| Writer | Christina Weir, Tony Bedard, Nunzio DeFilippis |
| Artist | Freddie Williams II |
| Cover Colorist | Guy Major |
| Colorist | Guy Major |
| Letterer | John J. Hill |
| Editor | Joan Hilty |
| Editor in Chief | Dan DiDio |
| Batman | Bruce Wayne |
| Nightwing | Richard 'Dick' Grayson |
| Amanda Waller | |
| Metamorpho | Rex Mason |
| Katana | Tatsu Yamashiro |
| Grace | Grace Choi |
| Thunder | Anissa Pierce |
| Captain Boomerang | Owen Mercer |
| Chemo |
| Age | Modern Age |
|---|---|
| Format | Comic |
| Series Group | Outsiders |
| Genre | Action | Adventure | Super-Heroes |
| No. of Pages | 32 |
| Country | USA |
| Language | English |