AK_Definitive_Playable_Characters
This mod allows you to select every standard playable character skin for Batman, Robin, Catwoman, Nightwing, Harley Quinn, Red Hood, Batgirl, and Azrael.

There are 2 different versions of this mod:
AK_Definitive_Playable_Characters 
AK_Definitive_Playable_Characters_R 
The reasoning for this is due to the requirement of replacing the ARChallenges.int file for the complete version of the mod, AK_Definitive_Playable_Characters_R 

The standard version of the mod, AK_Definitive_Playable_Characters, does not replace any game files, and is what most people should download.

AK_Definitive_Playable_Characters uses the default Playable_ Names for each DLC Character. As a result, Harley, Red Hood, and Batgirl do not have every standard character skin. 
AK_Definitve_Playable_Characters_R adds new Playable_ Names for each DLC Character (Harley, Red Hood, and Batgirl). This is done in order to fit any upk skin possible. As a result, Harley, Red Hood and Batgirl have every standard character skin. 

Installation
AK_Definitive_Playable_Characters
1. Download
2. Extract downloaded file
3. Place the AK_Definitve_Playable_Characters folder into DLC folder 418930 
X:\Program Files (x86)\Steam\steamapps\common\Batman Arkham Knight\DLC\418930
or
X:\Program Files\Epic Games\BatmanArkhamKnight\DLC\418930 
4. Run Arkham Knight

You can remove the mod by deleting the AK_Definitive_Playable_Characters folder from your DLC folder

AK_Definitive_Playable_Characters_R
1. Download
2. Extract downloaded file
3. Place the AK_Definitive_Playable_Characters_R folder into DLC folder 418930 
X:\Program Files (x86)\Steam\steamapps\common\Batman Arkham Knight\DLC\418930
or
X:\Program Files\Epic Games\BatmanArkhamKnight\DLC\418930 
4. In the BmGame Localization INT folder, replace [ARChallenges.int] with the downloaded modified one 
X:\Program Files (x86)\Steam\steamapps\common\Batman Arkham Knight\BmGame\Localization\INT
or
X:\Program Files\Epic Games\BatmanArkhamKnight\BmGame\Localization\INT 
5. Run Arkham Knight

You can remove the mod by deleting the AK_Definitive_Playable_Characters_R folder from your DLC folder, and by replacing the modified [ARChallenges.int] with the backup provided

AK_Definitive_Playable_Characters adds the following 47 skins:
BATMAN | RED HOOD
BATMAN | NIGHTWING
BATMAN | ROBIN
BATMAN | CATWOMAN
BATMAN | HARLEY QUINN
BATMAN | BATGIRL
BATMAN | BROKEN AZRAEL
Earth 2 Dark Knight Batman 

ROBIN | BATMAN
ROBIN | RED HOOD
ROBIN | NIGHTWING
ROBIN | CATWOMAN
ROBIN | HARLEY QUINN
ROBIN | BATGIRL
ROBIN | BROKEN AZRAEL

CATWOMAN | BATMAN
CATWOMAN | RED HOOD
CATWOMAN | NIGHTWING
CATWOMAN | ROBIN
CATWOMAN | HARLEY QUINN
CATWOMAN | BATGIRL
CATWOMAN | BROKEN AZRAEL

NIGHTWING | BATMAN
NIGHTWING | RED HOOD
NIGHTWING | ROBIN
NIGHTWING | CATWOMAN
NIGHTWING | HARLEY QUINN
NIGHTWING | BATGIRL
NIGHTWING | BROKEN AZRAEL

HARLEY QUINN | BATMAN

RED HOOD | BATMAN
RED HOOD | NIGHTWING
RED HOOD | CATWOMAN
RED HOOD | HARLEY QUINN
RED HOOD | BATGIRL

BATGIRL | BATMAN
BATGIRL | RED HOOD
BATGIRL | NIGHTWING
BATGIRL | CATWOMAN
BATGIRL | HARLEY QUINN

AZRAEL | BATMAN
AZRAEL | RED HOOD
AZRAEL | NIGHTWING
AZRAEL | ROBIN
AZRAEL | CATWOMAN
AZRAEL | HARLEY QUINN
AZRAEL | BATGIRL

AK_Definitive_Playable_Characters_R adds the following 57 skins:
BATMAN | RED HOOD
BATMAN | NIGHTWING
BATMAN | ROBIN
BATMAN | CATWOMAN
BATMAN | HARLEY QUINN
BATMAN | BATGIRL
BATMAN | BROKEN AZRAEL
Earth 2 Dark Knight Batman

ROBIN | BATMAN
ROBIN | RED HOOD
ROBIN | NIGHTWING
ROBIN | CATWOMAN
ROBIN | HARLEY QUINN
ROBIN | BATGIRL
ROBIN | BROKEN AZRAEL

CATWOMAN | BATMAN
CATWOMAN | RED HOOD
CATWOMAN | NIGHTWING
CATWOMAN | ROBIN
CATWOMAN | HARLEY QUINN
CATWOMAN | BATGIRL
CATWOMAN | BROKEN AZRAEL

NIGHTWING | BATMAN
NIGHTWING | RED HOOD
NIGHTWING | ROBIN
NIGHTWING | CATWOMAN
NIGHTWING | HARLEY QUINN
NIGHTWING | BATGIRL
NIGHTWING | BROKEN AZRAEL

HARLEY QUINN | BATMAN
HARLEY QUINN | RED HOOD
HARLEY QUINN | NIGHTWING
HARLEY QUINN | ROBIN
HARLEY QUINN | CATWOMAN
HARLEY QUINN | BATGIRL
HARLEY QUINN | AZRAEL

RED HOOD | BATMAN
RED HOOD | NIGHTWING
RED HOOD | ROBIN
RED HOOD | CATWOMAN
RED HOOD | HARLEY QUINN
RED HOOD | BATGIRL
RED HOOD | AZRAEL

BATGIRL | BATMAN
BATGIRL | RED HOOD
BATGIRL | NIGHTWING
BATGIRL | ROBIN
BATGIRL | CATWOMAN
BATGIRL | HARLEY QUINN
BATGIRL | BROKEN AZRAEL

AZRAEL | BATMAN
AZRAEL | RED HOOD
AZRAEL | NIGHTWING
AZRAEL | ROBIN
AZRAEL | CATWOMAN
AZRAEL | HARLEY QUINN
AZRAEL | BATGIRL

More Information
- AK_Definitive_Playable_Characters_R adds new Playable_ Names for Harley Quinn, Red Hood, and Batgirl. These are selectable in the player showcase. You can identify them as the modded versions due to the |vertical bars| around their names. Separate Arkham Episodes are also added for |Harley Quinn|, |Red Hood|, and |Batgirl| 
- I owe IceMage credit for teaching me how to add new Playable_ Names 
- No Mesh Swapping required
- Azrael skins are broken for characters without extra meshes
- All DLC is required

This is my first mod, so any feedback is greatly appreciated.