GCPD Building

The GCPD Building is the general denomination that was given to all of the Gotham City Police Department's stations and facilities all over Gotham City. The main headquarters was located on Bleake Island, with known stations located on Amusement Mile and Burnley — the latter formerly led by Captain James Gordon, before his promotion to Commissioner.

Arkham Origins Incident
The Amusement Mile Police Station, was inactive during the Christmas Eve Incident, and was a part of the train station which Batman must pass by to reach the Final Offer. The active police force during the holiday season in that area was concentrated on the Burnley Police Station, and was led by Captain Gordon.

Arkham Origins Blackgate Incident
Captain Gordon was on the roof of a GCPD Building talking to Batman about the breakout attempt at Blackgate Prison.

Before Arkham City Incident
The Amusement Mile Police Station was closed down by Gordon because it was part of the area that was walled off in order to create Arkham City.

Arkham City Incident
The Amusement Mile Station's Forensics Laboratory was used by Mr. Freeze to manufacture the cure for the Joker's illness and was where the boss fight with Freeze occurred. One of Penguin's Henchman, that attempted to get into the building remarked, to his fellow henchmen that his father had been imprisoned in there 20 years previously, and that the building was closed down 5 years previously and moved to downtown Gotham.

Arkham Knight Incident
The GCPD Headquarters, located on Bleake Island, was one of the main locations in Batman: Arkham Knight. All the captured super-villains were imprisoned in a special cell, that was surrounded by all sides.

GCPD Lockdown Incident
After The Knightfall Protocol, Penguin planned to escape custody until Nightwing later arrived and stopped him. Nightwing later put Penguin back to jail.

Inmates
Villains which were imprisoned include: There is even a Maximum Security West Wing (The Season of Infamy DLC) for other villains:
 * APC Lieutenants
 * Arkham Knight's Militia
 * Azrael (Optional)
 * Blackfire's Cult
 * Deacon Blackfire
 * Deathstroke
 * Dollotrons
 * Firefly
 * Harley Quinn
 * Harley's Gang
 * Harley's Thugs
 * Man-Bat (Can escape if played on October 31st or console set to it)
 * Officer JT Wicker
 * Penguin
 * The Penguin's Henchmen
 * Poison Ivy (Deceased; Released)
 * Professor Pyg
 * Raymond Underhill
 * The Riddler
 * Riddler Thugs
 * Rioters
 * Scarecrow
 * Scarecrow's Henchmen
 * Simon Stagg
 * Thugs
 * Two-Face
 * Two-Face's Gang
 * Iron Heights Prisoners
 * Killer Croc
 * Mad Hatter
 * Ra's al Ghul (Optional)
 * Two Rebel League of Assassins Ninjas (Optional)
 * Warden Ranken

Evidence Room
The Evidence Room was present in the main headquarters on Bleake Island. It was used by the GCPD to store weapons and equipment that belonged to the various villains that were arrested by Batman or other masked individuals. There was a main room, for recent or ongoing cases, and an archive room for older cases. In The Season of Infamy DLC, the Maximum Security West Wing contains 2 evidence displays used to store evidence pertaining to defeated DLC villains like Mad Hatter.

The contents of both rooms as of the end of Batman: Arkham Knight are listed below.

Main Room

 * Arkham Knight
 * Holographic Tactical Visor
 * Deacon Blackfire
 * Sacrificial Knife
 * Prayer Book
 * Sacramental Goblet


 * Deathstroke
 * Deathstroke's Sword
 * Handgun
 * Assault Rifle
 * Bo Staff


 * Firefly
 * Flamethrower
 * Jetpack


 * Harley Quinn
 * Machine Gun / Grenade Launcher
 * Baseball Bat (Red and White)
 * Modified Flare Gun


 * Man-Bat
 * Vial of Man-Bat Serum
 * Vampire Bat


 * Militia
 * Assault Rifles
 * Shotguns
 * Sniper Rifles
 * Miniguns
 * RPGs
 * Riot Shields
 * Baseball Bats
 * Pipes
 * Knives
 * Stun Batons
 * Swords


 * Penguin
 * Penguin's Umbrella (Hidden Blade)
 * Top Hat


 * Professor Pyg
 * Shattered Pig Mask
 * Butcher Knife


 * Riddler 
 * Riddler Trophy (Acquired by Batman)
 * Question-Mark Cane
 * Bowler Hat
 * Riddler Mech


 * Scarecrow
 * Fear Toxin Canisters/Vials
 * Syringe Glove


 * Simon Stagg
 * Nimbus Energy Cell
 * Two-Face
 * Two-Face's Dual Pistols
 * Two-Face's Coin
 * Rocket Launcher
 * Stolen Bank Money

Evidence Archive

 * Anarky
 * Anarchist Mask
 * Tagged Jacket


 * Bane
 * Titan Canister
 * Bane's Teddy Bear


 * Batman
 * Remote Electrical Charge (Reacquired by Batman)
 * Black Mask
 * Wooden Skull Mask


 * Deadshot
 * Deadshot's Wrist-Mounted Guns
 * Sniper Rifle


 * Electrocutioner
 * Shock Gloves


 * Great White Shark
 * Jar of Missing Body Parts
 * Harley Quinn
 * Laughing Gas Grenade
 * Baseball Bat (Red and Grey)
 * Snare Trap
 * Jack-In-A-Box Detonator
 * Joker
 * Joker's X- Ray Specs
 * Joker's Dart Gun that contained a vial of Titan
 * Explosive Joker Teeth
 * Joker's Personal Handgun/5 bullets and 1 BANG Flag


 * Killer Croc
 * Shock Collar


 * League of Assassins
 * Ra's al Ghul's Ceremonial Sword, Dagger, and Knife
 * Talia al Ghul's Ceremonial Sword


 * Mad Hatter
 * 10/6 Top Hat
 * Two Rabbit Masks


 * Mr. Freeze
 * Freeze Gun


 * Ventriloquist
 * Scarface (Joker Copy)
 * Tommy Gun

Maximum Security West Wing Evidence (The Season of Infamy DLC)

 * Killer Croc
 * Waylon Jones' Severed Hand
 * Mad Hatter
 * Batman's Adventures in Wonderland Pop-up Book
 * Cheshire Cat Mask
 * Queen of Hearts Mask
 * White Rabbit Mask


 * Mr. Freeze
 * Nora Fries' Cryo-Chamber


 * Ra's al Ghul
 * Loyalist Assassin Garb and Blade (Optional)
 * Rebel Assassin Demon Mask and Two Knives (Optional)

Trivia

 * There were numerous journals with the notice, Criminal Couple Gunned Down and Boy Watches as Parents Die!, that referred to Prometheus. There was also a dossier about him, and it stated that he passed his trauma psychology test and was released November 12th, 1982.
 * The Amusement Mile Station reappeared in Batman: Arkham Origins, however, the Bat-Signal was not present on the roof yet, due to the still antagonistic relationship between the GCPD and Batman.
 * In Arkham City, when you moved away from the Bat-Signal, it started shining. Some players thought of it as a glitch or a bug though. But it most likely meant that it stopped shining because Batman was at the Bat-Signal.
 * In Arkham Origins, while playing the Predator Challenge Map inside the building, the player was able to trick themselves out from the area when playing as Batman or Deathstroke. They only need to shoot the Remote Claw inside the elevator shaft and grapple, and then let go of the grapple and land on a small platform. Then, they could process to a nearby vent. The level, however only loaded a small distance behind the vent, and showed low resolution buildings and ended up in blackness. If the player jumped into the darkness, they would fall for a while and then die.
 * The Amusement Mile Station was likely commissioned between Arkham Asylum and Arkham City due to Commissioner Gordon's parking space that stated * Reserved for Commissioner Gordon *. The station was used for a short time due to the thugs stating that the station was moved downtown 5 years before Arkham City's events. The station was likely only used for a year due to Arkham Origins events placed 8 years before Arkham Asylum and Arkham Asylum's events placed 18 months prior to Arkham City's events.
 * In Arkham Knight, the militia member whose arm Batman broke near the beginning of the game can be seen (and heard) taunting Batman every time he goes past his cell. If the player presses the attack button while facing him, Batman would grab him through the bars and knock him out against the bars. If this was attempted again, the thug would get surprised, fall backwards and hit his head to the floor, again rendering him unconscious. However, if this was attempted a third time, Batman would just punch the air with no effect.
 * Every imprisoned thug shows respect to their boss in the GCPD Building: Penguin's Henchman says: "Hey it hasn't been the same without ya!" and Penguin says: "See that Batman? That's loyalty.". Two-Face's Henchman says: "Hands off the boss, Bat-freak!" and Two-Face says: "Save your breath, we'll get our chance.". Deacon Blackfire's Followers show respect to their leader by telling Batman: "The Deacon can forgive your sins, Batman.".
 * There is an abandoned GCPD Station at Drescher that is closed due to the construction of Ryker Heights.
 * There are a list of crimes the inmates have committed in Arkham Knight.
 * Azrael-conspiracy and attempted murder.
 * Deacon Blackfire-kidnapping and attempted murder.
 * Deathstroke-conspiracy, destruction of city property, assault, attempted murder, and aiding and abetting known felons.
 * Firefly-three counts of arson and aiding and abetting a known felon.
 * Hush-identity theft, murder, attempted murder, and cyber theft.
 * Killer Croc-assault, property damage, kidnapping, torture, and several counts of murder.
 * Mad Hatter-three counts of both kidnapping and attempted second-degree murder.
 * Man-Bat-illegal experimentation, murder, and assault.
 * Penguin-gunrunning, conspiracy, aiding and abetting known felons, attempted escape from prison, kidnapping, attempted murder, and racketeering.
 * Professor Pyg-kidnapping, assault, murder, attempted murder, mutilation, and GBH.
 * Raymond Underhill-aiding and abetting a known arsonist.
 * Riddler-kidnapping, conspiracy, aiding and abetting known felons, and attempted murder.
 * Scarecrow-kidnapping, assault with a deadly weapon, conspiracy, attempted murder, acts of terrorism, torture, and aiding and abetting known felons.
 * Simon Stagg-illegal experimentation, illegal sale of weapons, torture, and aiding and abetting a known felon.
 * Two-Face-attempted murder, conspiracy, bank robbery, and aiding and abetting known felons.
 * Warden Ranken-illegal experimentation, human experimentation, torture, and abuse of power.