|Affiliations:||Gotham Police Department|
|Voiced by:||John Considine|
Lieutenant Hackle was a detective in Internal Affairs.
Hackle was assigned to investigate what went wrong during a sting operation. He was hard on those involved—officers Montoya and Wilkes and Detective Bullock. Faced with conflicting testimonies, he suspected that either one or all was on the take, and suspended them all from duty. Hackle was less than pleased that Montoya went out on her own, but Commissioner Gordon, rather fiercely, closed the investigation, pointing out that the gang was in custody and the GCPD recovered the bait money, meaning that there was nothing more to investigate.