Suicide Squad: Hell to Pay (2018 Video)
Harley calls Deadshot "Grumpy."
Harley compared Killer Frost to Frosty the Snowman.
Referenced by name.
Zoe's roommate uses the name PussycatKill when playing the video game Blood World.
Copperhead calls Bronze Tiger Dolemite.
Reverse Flash: "Go ahead, make my afterlife."
Source for the "Get Out of Hell Free" card
Deadshot: "What do we do with Magic Mike?"
Suicide Squad: Hell to Pay is #4.