A recent leak suggests that LEGO Batman: Legacy of the Dark Knight‘s Mayhem Collection DLC could see The Joker and Harley Quinn face off against some familiar Suicide Squad villains and anti-heroes. LEGO Batman: Legacy of the Dark Knight‘s Mayhem Collection expansion is currently set to launch in September 2026 and will be available to those who purchased the Deluxe Edition of the game, or to those who buy the DLC separately when it’s out.
Released last week, LEGO Batman: Legacy of the Dark Knight is the latest brick-built romp from developer TT Games. This new entry sees fans play through a good portion of the Caped Crusader’s crime-fighting career, guiding them through the hero’s biggest on-screen and on-page highlights from over the last six decades or so. LEGO Batman: Legacy of the Dark Knight has already made a sizable impact with critics, with it sitting at a Top Critic Average of 85 on OpenCritic.
How to Get All Movie Batman Suits in LEGO Batman: Legacy of the Dark Knight
From Adam West to Robert Pattinson, every live-action Batman has a suit to unlock and wear in LEGO Batman: Legacy of the Dark Knight, and here’s how.
LEGO Batman: Legacy of the Dark Knight Might Be Getting Suicide Squad DLC
Not much is currently known about LEGO Batman: Legacy of the Dark Knight‘s upcoming Mayhem Collection DLC. According to the DLC’s official Steam page, the Mayhem Collection expansion will include a new story mission and a new Mayhem Mode featuring playable versions of The Joker and Harley Quinn, both of whom come with their own unique takedowns, gadgets, and abilities. While the story mission will see players escape from Arkham Asylum as The Joker and Harley, the Mayhem Mode will let them “Cause chaos on the streets of Gotham City.”
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On May 24, X0XLEAK (an account primarily known for sharing Marvel Rivals leaks, rumors, and datamines) shared what appears to be a character list for LEGO Batman: Legacy of the Dark Knight‘s Mayhem Collection DLC. This leak seems to suggest that players will be facing off against Task Force X in the upcoming Mayhem Mode, with the list provided featuring 12 DC characters that are often associated with the Suicide Squad, such as Rick Flag, King Shark, Deadshot, Captain Boomerang, and the memed-to-high-heaven Katana. This leak also suggests that Harley Quinn and The Joker will get access to ally goons, though it’s unclear how they’ll factor into the DLC’s gameplay.
A few days earlier, X0XLEAK shared some potential gameplay details for this LEGO Batman Mayhem Collection DLC. This post claimed that the DLC would feature Harley Quinn’s hyenas Bud and Lou, that the Mayhem Mode would feature its own kind of unique currency, and that there will be “7 or 9 objectives and/or missions” to complete along with bonus objectives that award completion badges. A Mayhem Hideout hub area will also allegedly be present in the DLC, with it offering a costume shop and a challenge board.
Who’s That Character?
Identify the silhouettes before time runs out.
Identify the silhouettes before time runs out.
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LEGO Batman: Legacy of the Dark Knight Joker and Harley Quinn Skins Leak
Also on May 24, X0XLEAKS shared a lengthy list of leaked in-game skins for LEGO Batman: Legacy of the Dark Knight‘s playable Joker and Harley Quinn. This list includes over 40 potential outfits for The Joker and Harley Quinn, including Injustice 2-inspired costumes for both characters, a Joker movie-inspired costume for the Clown Prince of Crime, and an Absolute Batman-inspired skin for Harley.
- Released
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May 22, 2026
- Franchise
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LEGO Batman
- PC Release Date
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May 22, 2026
