Warner Bros. Interactive Entertainment and DC Entertainment have revealed the design of the Nightwing character (Dick Grayson) for Batman: Arkham City with the release of the concept image above. Additionally, they have announced that the Nightwing Bundle Park for the game will be available from November 1st.
Coming Soon have the scoop;
Nightwing comes complete with his own unique gadgets and special moves, and is playable in all challenge maps in the game, as well as two additional challenge maps that are included with the pack: Wayne Manor and Main Hall. The pack also contains a bonus Animated Series Nightwing character skin.
Both content bundles are going to be available on Xbox LIVE® Marketplace for 560 Microsoft Points and PlayStation®Network for $6.99.