Lego Batman: Legacy of the Dark Knight gets Harley Quinn outfit from Batman: Arkham Asylum
In brief
- GameSpot reports that Lego Batman: Legacy of the Dark Knight is getting a Harley Quinn outfit based on Batman: Arkham Asylum as part of the Mayhem Collection.
TT Games describes the Mayhem Collection as a tribute to Batman: The Animated Series. The provided information does not include a full contents list for the expansion or an exact release date for the game.
What happened
GameSpot has highlighted a new Harley Quinn costume for Lego Batman: Legacy of the Dark Knight. It is a version that draws on her Arkham Asylum look from 2009, with a doctor outfit, leather corset, and domino mask standing out as key details. In Warner Bros. Games’ description, that Arkham version is presented as a clear break from Harley’s classic jester outfit from Batman: The Animated Series and the related comics.
The outfit is part of the Mayhem Collection, an expansion that the source says includes multiple unlockable outfits for Harley Quinn and the Joker. TT Games presents the collection as a love letter to Batman: The Animated Series, while also referencing other Batman shows, films, games, and comics. The available information says the collection includes multiple references and easter eggs, but does not specify exactly which ones.
The source does not mention an exact release date for Lego Batman: Legacy of the Dark Knight. However, the provided material states that the game was released earlier in 2026. That only confirms the game launched in 2026, not the exact day.
Timeline
2009 — Batman: Arkham Asylum is released, the game Harley Quinn’s outfit is based on.
earlier in 2026 — Lego Batman: Legacy of the Dark Knight is released, according to the source.
2026-09-16 — GameSpot publishes the article about the Harley Quinn outfit and the Mayhem Collection.
2026 — TT Games ties the Mayhem Collection to Batman: The Animated Series and broader Batman references.
Background
Harley Quinn’s Arkham Asylum look is described in the source as a clear departure from her classic jester style. The description mentions a repurposed doctor outfit, a leather corset, and a domino mask, giving her a more chaotic appearance than her familiar Batman: The Animated Series look. Warner Bros. Games describes that version in the provided video description as a doctor-themed dominatrix, emphasizing the character’s very different presentation in Rocksteady’s 2009 game.
The Mayhem Collection is linked by TT Games to Batman: The Animated Series and to broader Batman references. The available information does not break those references down further, so only the fact that the expansion contains multiple nods to the franchise is confirmed. The source also says the collection includes multiple outfits for Harley Quinn and the Joker, but it does not provide a full list of unlockables or the order in which they become available.
The provided source material also includes a Warner Bros. Games YouTube video titled And still one of Harley's best outfits. The description for that video provides the concrete context that Harley Quinn’s appearance in Arkham Asylum changed dramatically from her earlier versions, but the title itself is not used as a standalone source for new claims. That leaves the core of the report limited to the Arkham Asylum-inspired outfit, the Mayhem Collection, and TT Games’ Batman: The Animated Series angle.