- Script
- Peter J. Tomasi (credited)
- Pencils
- Kenneth Rocafort (credited)
- Inks
- Kenneth Rocafort (credited)
- Colors
- Dan Brown (credited as Daniel Brown)
- Letters
- Rob Leigh (credited)
- Genre
- superhero
- Characters
- Batman [Bruce Wayne]; Killer Croc [Waylon Jones]; Ratty Riz; Hardback; Gup; Ally; Garter; Bandit
- Synopsis
- While the Joker War rages on, Batman investigates people who have been kidnapped and taken into the sewers and finds Killer Croc leading a gang of people mutated by toxic chemicals dumped into the sewers by the Joker.
- Reprints
- Keywords
- Ace Chemical Processing Plant; Arkham Asylum; batarang; batrope; Gotham City; Monstertown; sewer
Joker War Collateral Damage tie-in