The "Chaos Collection" for LEGO Batman: Dark Knight Legacy will launch on September 18. Harley Quinn and the Joker will take center stage in the expansion, with players able to unlock multiple outfits for both characters during missions.
One of the currently revealed outfits comes from the 2009 game Batman: Arkham Asylum. This Harley Quinn design departs from the jester costume commonly seen in Batman: The Animated Series and related comics, opting instead for a redesigned doctor's outfit, leather corset, and domino mask, while retaining elements tied to the character's early image.
This look has been recreated in LEGO form for LEGO Batman: Dark Knight Legacy, with descriptions highlighting her mischievous pigtails and "chaos" corset.
Developer TT Games stated that the "Chaos Collection" is a love letter to Batman: The Animated Series. In addition to featuring numerous elements from the animated series, the expansion will include Easter eggs from other Batman films, TV shows, games, and comic stories, including a tribute to Arleen Sorkin, Harley Quinn's original voice actress.
New story missions will depict the first meeting between the Joker and Harley Quinn. At that time, she was still psychiatrist Harleen Quinzel and had not yet become the Joker's partner.
The "Chaos Collection" will arrive in LEGO Batman: Dark Knight Legacy on September 18. The Nintendo Switch 2 version of the game will also launch on the same day, while PC, PS5, and Xbox Series X|S versions are already available.