The final DLC for "Batman: Arkham Knight" this year will finally be available tomorrow, Dec. 22. The December DLC called Season of Infamy includes a group of popular Caped Crusader baddies and new Batman skins.

For this expansion pack, players are getting brand new Most Wanted missions where they can square off against Killer Croc, Mister Freeze, Mad Hatter and Ra's al Ghul. Season of Infamy also brings back the iconic Batmobile from the original Batman: Arkham Asylum.

While "Batman: Arkham Knight" players fend off the supervillains, gamers can now don the garb Bruce Wayne had in the 2008 Christian Bale Batman film "The Dark Knight." As per Polygon, the item was added after insistent public demand. The update should land on the game tomorrow. Those who purchased the season pass tied to the game can test drive the DLC as soon as it is made available.

Season of Infamy marks the end of the DLC package for the game. Developer Rocksteady released an expansion pack every month after the installment was released back in June.

Last month's DLC was a nod to the upcoming DC Comics superhero film "Batman v Superman: Dawn of Justice." The final DLC, on the other hand, could be the last content gamers will ever of the "Batman: Arkham" franchise.

As fans may have already heard, "Batman: Arkham Knight" is the concluding installment in the critically acclaimed and well-loved franchise by Rocksteady. It is unclear, however, whether or not there will be more treats under the Batman universe to be cooked up by the game studio.

"It has been an emotional and exciting journey for us. I've always said it's a tremendous privilege and honor to be kind of custodians of the Batman universe," Rocksteady head Sefton Hill said in the final Arkham Insider episode.

"To live this nearly 10 years, to be thinking about the big guy and all the adventures and coming up new things we've been doing ... it's been amazing, energizing, emotional," he went on to say, adding that he hoped that fans loved the work they have done and being able to be Batman.