A dataminer has leaked the full Task Force X character roster for LEGO Batman: Legacy of the Dark Knight’s upcoming Mayhem DLC, including Deathstroke, King Shark, Deadshot, and more.
LEGO Batman: Legacy of the Dark Knight launched on May 22, 2026, and it already holds an 84 on Metacritic across 61 critic reviews, making it the highest-rated LEGO game of all time. Just days after release, a dataminer known as X0X_LEAK has uncovered files suggesting that the Mayhem Collection DLC, confirmed for September 2026, will include over a dozen Task Force X characters alongside the already-announced playable Joker and Harley Quinn.
Every Leaked Task Force X Character
The leak, shared on Twitter/X on May 24, 2026, lists the following characters under the label “Task Force X goons” within the Mayhem DLC data:
- Bronze Tiger
- Captain Boomerang
- Deadshot
- Deathstroke
- Javelin
- Katana
- Killer Croc
- King Shark
- Lester (The Electrocutioner?)
- Mongal
- Polka Dot Man
- Rick Flag
The leak also references A.R.G.U.S. agents, cops, and “ally goons” tied to both Joker and Harley Quinn. Many of these names will be immediately recognizable to fans of the Suicide Squad films and DC Comics. However, the leak does not clarify whether these characters will be playable, appear as NPCs, serve as enemies, or function as allies during the Mayhem Mode and the new story mission.
How Reliable Is This Leak?
The X0X_LEAK account has a track record of sharing accurate datamined information for other titles, which lends some credibility to this discovery. That said, datamined content does not always make it into the final product. Characters could be reshuffled between packs, cut entirely, or appear in a different form than expected. Neither TT Games nor Warner Bros. Games has commented on the leak. Until official confirmation arrives, treat this as plausible but unverified information.
What Is Officially Confirmed for the Mayhem Collection?
While the Task Force X roster remains a leak, the Mayhem Collection DLC itself has been fully detailed by Warner Bros. Games. Included with the Deluxe Edition and scheduled for September 2026, the confirmed content is substantial:
- Mayhem Mode: A brand-new game mode featuring The Joker and Harley Quinn as fully playable characters, each with unique abilities, gadgets, and takedowns.
- New Story Mission: A narrative-driven mission where Joker and Harley Quinn break out of Arkham Asylum and unleash chaos across Gotham City.
- Sinister Pack: Seven new villain-themed suits (one for each original playable character), five new Batcave props, and one new Batmobile.
With Joker and Harley Quinn joining the roster, the total playable character count will rise from seven to nine. The base game features Batman, Robin, Nightwing, Batgirl, Jim Gordon, Catwoman, and Talia al Ghul, each with unique skill trees, gadgets, and combat styles.
Mayhem Mode: What Dataminers Have Found So Far
Beyond the character list, dataminers have uncovered additional details about how Mayhem Mode will function. According to findings shared across the community, the mode appears to include:
- A unique currency system separate from the standard studs used in the main game
- Between 7 and 9 structured objectives or missions
- Bonus objectives and completion badges
- Activities such as graffiti, stealing cars, destroying landmarks, and interacting with A.R.G.U.S.
- A dedicated Mayhem Hideout serving as a villain hub
- A challenge board, costume shop, planning board, and a standard shop within the hideout
- Harley Quinn’s hyenas, Bud and Lou, appearing as part of the mode
- Joker and Harley tokens (similar to Batman tokens in the main game)
If accurate, this paints a picture of a mode that goes far beyond a simple character swap. It appears to offer an entirely separate gameplay loop built around the villain experience, with its own economy, progression, and exploration objectives across Gotham City.
Arkham City Tease: Could More DLC Be on the Way?
Players have noticed an intriguing Easter egg inside the Batcave. A screen displays what appears to be an Arkham City map, complete with a Hugo Strange reference, and Batman even acknowledges it with dialogue. The visual closely mirrors the original Arkham Asylum Easter egg that teased Arkham City’s announcement years ago. While the main game already features Arkham Asylum as a location, neither Arkham City nor Arkham Knight environments are present. This has led to widespread speculation that additional DLC beyond the Mayhem Collection could be planned, potentially expanding Gotham with Arkham City as a new explorable area.
LEGO Batman: Legacy of the Dark Knight at a Glance
| Detail | Info |
|---|---|
| Release Date | May 22, 2026 |
| Platforms | PS5, Xbox Series X|S, PC (Steam, Epic Games Store) |
| Nintendo Switch 2 | Later in 2026 (date TBA) |
| Developer | TT Games (Traveller’s Tales) |
| Publisher | Warner Bros. Games |
| Metacritic Score | 84 (61 critic reviews) |
| User Score | 8.9 (286 ratings) |
| Standard Edition Price | $69.99 USD |
| Deluxe Edition Price | $89.99 USD |
| Main Story Length | 12-14 hours |
| Completionist Length | 25-50+ hours |
| Playable Characters | 7 at launch (9 in September) |
| Total Suits | 100+ |
| Local Co-op | 2-player (no online co-op) |
| Microtransactions | None |
Launch Day DLC: What the Legacy Collection Includes
Ahead of the September Mayhem Collection, Deluxe Edition owners already have access to the Legacy Collection, which launched alongside the base game. It consists of three themed packs offering over 30 items:
- Arkham Trilogy Pack: Seven suits inspired by the Batman Arkham series, the Arkham Knight Batmobile, and five Batcave props including an Arkham Asylum Diorama and Riddler Trophy.
- Batman Beyond Pack: Seven suits inspired by the Batman Beyond animated series, the Batman Beyond Batmobile, and five Batcave props.
- Party Music Pack: Seven party-themed suits, the Monster Truck Batmobile, and five Batcave props including a Dance Floor and Lava Lamp.
Players who want just the DLC content can also purchase the Deluxe Edition Upgrade separately for $24.99 on Steam and other storefronts. Additionally, four physical LEGO DC Batman sets offer redeemable codes for exclusive golden in-game items including a Golden Batman suit and gold-variant Batmobiles from various Batman films.
Questions Players Are Asking
Will the Task Force X characters be playable?
The leak labels them as “goons,” which suggests they are more likely to appear as NPC enemies or allies rather than fully playable characters. Only Joker and Harley Quinn have been officially confirmed as new playable additions.
Can the Mayhem Collection be purchased separately?
As of now, the Mayhem Collection is only confirmed as part of the Deluxe Edition. Warner Bros. Games has not yet announced whether it will be available as a standalone purchase, though a separate release is widely expected.
Is online co-op available?
No. LEGO Batman: Legacy of the Dark Knight supports two-player local couch co-op only. Online co-op is not available and has not been announced for any future update.
How does this compare to previous LEGO Batman games?
Unlike LEGO Batman 3: Beyond Gotham, which featured over 160 playable characters with DLC, Legacy of the Dark Knight focuses on a tighter roster of seven deeply developed characters (nine with DLC). The trade-off is a much more detailed open world, over 100 suits, and a refined combat system that draws comparisons to the Batman Arkham series. The Metacritic score of 84 places it above every previous LEGO game, including LEGO Star Wars: The Skywalker Saga (82).
When exactly does the Mayhem DLC release?
The Mayhem Collection is confirmed for September 2026. An exact date has not been announced. Warner Bros. Games and TT Games are expected to reveal more details as the release window approaches.
LEGO Batman: Legacy of the Dark Knight has already established itself as one of 2026’s standout releases, and the leaked Task Force X roster suggests that TT Games is planning to make the Mayhem Collection a significant expansion. With a new villain-driven story mission, a full Mayhem Mode with its own progression system, and potentially over a dozen new characters drawn from DC’s Suicide Squad lore, September is shaping up to be an exciting month for Gotham City. Keep an eye on official channels from Warner Bros. Games for confirmation.
