Renee Montoya - Batman: Arkham Knight

 A detective with the GCPD. 

Harvey Bullock - Batman: Arkham Knight

A detective with the GCPD. 

John Jones - Batman: Arkham Knight

A detective with the GCPD. 

Ophelia - Batman: Arkham Knight

The ex-wife of Anthony Lund. 

Paul Sloane - Batman: Arkham Knight

Star of Other Fish to Fry and The Prosecutor, Paul Sloane is a serial killer who began his murder spree as a method-acting exercise to better understand the mind of a killer for a role.

Ray Palmer - Batman: Arkham Knight

A former employee at Ace Chemicals. 

Thaddeus Ryerstad - Batman: Arkham Knight

Wanted by the Blüdhaven City Police Department.