Netherrealm Studios and Warner Bros. made available a new Injustice Mobile booster pack in the in-game store. The booster pack is called The Arkham Knight Booster Pack and includes among others three of the following characters:
- Arkham Batman
- Arkham Knight Harley Quinn
- Arkham Knight The Arkham Knight
- Arkham Origins Bane
- Arkham Origins The Joker
The Booster Pack gives you access to Arkham Knight Harley Quinn, a character that is currently available through her own Early Access booster pack and will be the next single player challenge.