The Millennium Skins Pack for Batman™: Arkham Origins contains six bonus skins based on a variety of classic and modern storylines pulled from the comics*. The content can be used in challenges maps, as well as the single-player campaign upon completion of the main story and in multiplayer for players that reach Level 2.
Included in the pack are:
Red Son Batman
Blackest Night Batman
1st Appearance Batman
New 52 Graphic Batman
Batman™: Noe
One Year Later Robin