Blockbuster - Batman: Arkham Knight: Genesis

An inmate at Arkham Asylum, Blockbuster was hired by the Joker, along with Catman, to impersonate Batman and beat the captured, psychologically tortured Jason Todd to death.

After Todd freed himself from his restraints, he overpowered Blockbuster and held him at gunpoint. 

Seeing his hesitation in pulling the trigger, he was shot and killed by Harley Quinn. 

Catman - Batman: Arkham Knight: Genesis

An inmate at Arkham Asylum, Catman, aka Thomas Blake, was hired by the Joker, along with Blockbuster, to impersonate Batman and beat the captured, psychologically tortured Jason Todd to death.

After Todd freed himself from his restraints, he overpowered and killed Blake, shooting him in the chest. 

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. 

Crane Chemicals - Earth ???? - Suicide Squad: Kill the Justice League

An American chemical company. 

The Penguin - Earth ???? - Suicide Squad: Kill the Justice League

A member of Task-Force X recruited by Amanda Waller to stop Brainiac's invasion, the Penguin was killed when the Joker blew up the Hall of Justice. 

His trick umbrella was salvaged by the Joker. 

The Riddler - Earth ???? - Suicide Squad: Kill the Justice League

A member of Task-Force X recruited by Amanda Waller to stop Brainiac's invasion, the Riddler was killed when the Joker blew up the Hall of Justice.