TT Games packed Lego Batman: Legacy of the Dark Knight with tributes that reach far beyond the Caped Crusader's comic and film history. The open-world Gotham doubles as a museum of pop culture, weaving in horror games, sitcom catchphrases, sketch comedy, and even a viral tweet from a former Batman cast member.

Batman film history references
The core of the game leans on roughly 80 years of Batman across comics, TV, and film. Character designs and set pieces draw directly from the live-action movies, often recreating scenes shot-for-shot.
| Reference | Source |
|---|---|
| Man running with a sparking bomb, unable to dispose of it | Batman: The Movie (1966), Adam West era |
| Shark Repellent Batspray used against a giant shark in chapter two | Batman: The Movie (1966) |
| "Furst City Planners" signage painted on Gotham brickwork | Anton Furst, production designer on Batman (1989) |
| Danny Elfman's Batman theme playing in Shreck's Department Store | Batman (1989) score |
| Shreck's Department Store itself | Maximillian Shreck, Batman Returns (1992) |
| Catwoman and Penguin minifig designs | Michelle Pfeiffer and Danny DeVito, Batman Returns (1992) |
| Goons dressed as mimes | Joker's mime gang at City Hall, Batman (1989) |
| Batman saying "You wanna get nuts? Let's get nuts!" | Michael Keaton, Batman (1989) |
| Opening shipping container sequence | Batman's introduction in Batman Begins (2005) |
| Joker's "Why so serious?" line and scarred design | Heath Ledger, The Dark Knight (2008) |
| Bane's "darkness is your ally" speech, voiced by Matt Berry | The Dark Knight Rises (2012) |
| Tumbler Batmobile cameo | Nolan's Dark Knight trilogy |
| Jeffrey Wright-style Jim Gordon | The Batman (2022) |
| Flipped-camera Penguin car chase finale | The Batman (2022) |
| Kord Industries shipping container | Ted Kord / Blue Beetle, DC Comics |

The American Psycho business card scene
One of the more meta gags happens when Bruce Wayne places a business card on a desk. After he leaves, another character picks it up and starts gushing over the brick's craftsmanship, even asking whether it's printed on eggshell stationery. It's a direct lift of the famous business card scene from the 2000 film American Psycho, which stars Christian Bale, the same actor who later played Batman in Christopher Nolan's trilogy.

It's Always Sunny in Philadelphia, via the Penguin
During the Penguin boss fight, the villain drops the line, "so anyway, I started blasting," right in the middle of combat. It's pulled straight from Frank Reynolds, the character played by Danny DeVito on It's Always Sunny in Philadelphia. DeVito, of course, also played the Penguin in Batman Returns, so the joke folds back on itself.

Five Nights at Freddy's animatronic bear
Exploring Gotham can lead Batman face-to-face with a hostile animatronic bear that tries to eat him. The setup nods to Five Nights at Freddy's, where animatronic mascots stalk the player through nighttime shifts at a haunted pizzeria.
Resident Evil 4's merchant, played by Bat-Mite
Bat-Mite shows up as a shop vendor who sells cosmetics, Batsuits, and Batcave decor. His outfit includes a purple bandana over his face, matching the Merchant from Resident Evil 4. He even starts to deliver the Merchant's "What are you buying?" greeting before bailing out, complaining that the gravelly voice is rough on his throat.

Street Fighter II's car bonus stage
When Batman demolishes Black Mask's car, the sequence mirrors the bonus stage from Street Fighter II, in which fighters smash a parked vehicle for points before time runs out.

The I Think You Should Leave diner gag
A diner scene features a patron asking the waiter about eating challenges. The waiter explains that finishing "55 burgers, 55 shakes, and 55 tacos" will get you thrown out, lifting the absurd order from the "Pay It Forward" sketch on Tim Robinson's I Think You Should Leave.
Jurassic Park raptors during the Poison Ivy fight
The Poison Ivy boss battle includes a quick shot of her twin-headed snapdragon snapping at itself. The framing mimics the raptors stalking the kids through the kitchen in Jurassic Park, down to the heads twitching toward each other in tandem.
Liam Neeson's Taken monologue
Another hidden line riffs on Liam Neeson's "I will look for you, I will find you, and I will kill you" speech from Taken. Neeson played Ra's al Ghul in Batman Begins, giving the joke a second layer for fans of the Nolan trilogy.

Michael Caine's "Batman Begin" tweet
Alfred, voiced and written in the spirit of Michael Caine's portrayal, recites the line "Why do we fall? So we can learn to pick ourselves up. Batman Begin." That's a word-for-word quote of Caine's own August 2024 post on X, typo and all, which became a meme after fans noticed the missing "s" in the film's title.

How the Joker's design changes through the story
Rather than picking a single live-action Joker, the game uses one character who evolves through visual cues from multiple performances. Jonathan Smith, TT Games' head of production, has described the progression as starting with Jack in Crime Alley, becoming Red Hood 1 at Ace Chemicals, taking on traits of Jack Nicholson's 1989 Joker, then drifting toward Heath Ledger's scarred, manic version as the story darkens.
Batman himself follows a similar pattern, cycling through suits, vehicles, and mannerisms tied to different eras. Unlocked Batsuits and Batmobiles can be displayed in the customizable Batcave, and you swap them in as you progress.
Deeper cuts to watch for
Plenty of smaller jokes are tucked away in cutscenes, side missions, and ambient dialogue. A Limmy's Show sketch gets quoted in passing, kid-show viral clips show up in background TVs, and the onomatopoeia "POW" and "BIFF" flash on screen during fights as a nod to the 1966 series' comic-panel cutaways. With Rocksteady listed in the credits alongside TT Games, the combat and traversal also pay homage to the Batman: Arkham games that the studio built its name on.
The full count of references runs well past four dozen, and players are still surfacing new ones across Gotham. If you want to spot them yourself, slow down in busy districts, read shop signage, and listen for one-off lines from minor villains during boss fights, since that's where most of the layered jokes are hiding.