LEGO Batman Legacy of the Dark Knight DLC Leak Reveals Massive Villain Roster

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By Gaming News
26 May 2026 no comments

A massive new leak for LEGO Batman: Legacy of the Dark Knight reveals over a dozen Task Force X characters coming to the Mayhem Collection DLC.

 
Key Takeaways
  • Massive DLC Leak: Dataminers have uncovered over a dozen Task Force X characters rumored for the upcoming Mayhem Collection DLC in September 2026.
  • Iconic Villain Roster: The leaked lineup includes major DC figures such as Deathstroke, Deadshot, Captain Boomerang, and Killer Croc as ally goons for Joker and Harley Quinn.
  • Expanded Customization: The leak also details numerous upcoming alternative costumes for Joker and Harley Quinn, drawing inspiration from Arkham Asylum, BTAS, and the DC Cinematic Universe.
 

LEGO Batman Legacy of the Dark Knight has already turned into one of the most successful game launches of the year. Fans have been spending the past four days exploring Gotham, unlocking characters, and causing all kinds of chaos across the city since the game released last week. But while players are still fully occupied with the base game, a new leak has already pushed excitement even further ahead towards the upcoming Mayhem Collection DLC arriving this September.

 

Leak Suggests Major Villain Roster for the Mayhem Collection DLC

LEGO Batman: Legacy of the Dark Knight officially released on May 22, 2026, and it is exactly as good as what fans expected it to be. While gamers are still enjoying every bit of Gotham City, dataminers have managed to get new info relating to the Mayhem Collection DLC which is scheduled to release in September 2026.

As per the Steam listing, we already know that this expansion will feature a new Story Mission and a dedicated Mayhem Mode featuring The Joker and Harley Quinn, along with a villain-themed Sinister Pack. It does not mention other characters for now but a recent leak suggests that over a dozen Task Force X characters are coming to the roster too.

Posted by user X0XLEAK on X, the leak claims that Joker and Harley Quinn will have a massive crew of ally goons. This lineup will include Bronze Tiger, Captain Boomerang, Deadshot, Deathstroke, Javelin, Katana, Killer Croc, King Shark, Lester (which fans speculate is The Electrocutioner), Mongal, Polka Dot Man, Rick Flag, and A.R.G.U.S. forces. The leak also mentions additional Joker and Harley costumes along with more details tied to the new Mayhem Mode itself.

   

Since the game only just launched, an official confirmation for this rumored lineup will likely not happen anytime soon. The full roster could be revealed closer to September or TT Games may decide to gradually reveal them over the next few months. Either way, this DLC sounds awesome and is a great addition to an already very fun game.

 

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Sending some gaming news your way from a surfing paradise island. Loves creating content, and researching informative facts and useless trivia. A novice in the gaming industry but a veteran in communications and publication.

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