Batman: No Laughing Matter/Tropes

* Actor Allusion: The Joker notes Batman must be desesperate if he wants to form an alliance with him, as Loki did in Thor: The Dark World.
* Adaptational Jerkass: A mild one. Batman is still compassionate about his foes, but he believes mental illnesses inherently turns someone evil. Part of his arc involves him overcoming this mindset.
* Big Damn Heroes: The Joker manages to kill The Batman Who Laughs before he could kill his Earth's Batman.
* Crazy-Prepared: The Batman Who Laughs. Is the fact that he is so prepared everyone just plays to his games what makes him such a deadly foe.
* Hannibal Lecture: The Joker tauntly gives a few of these to Batman during their partnership.
* Mythology Gag:
** The Batmobile is modeled after the version depicted in the Superfriends series, througth also sharing dome inspiration from the Matt Reeves version.
** Upon realizing Batman wants his help, Joker says "You need me Sunny Jim", which is word-for-word what he said to Batman in the Batman: The Brave and the Bold episode "Game Over For Owlman!" when talking about a partnership.
** The Joker kills the Batman Who Laughs by pretending to shoot him with a "Bang!" Gun he later reveals is real, whoch is how he killed Bozo in Batman Beyond: Return of the Joker.
** Speaking of Return of the Joker, The Batman Who Laughs' invasion of the Batcave echoes the Joker's own attack on the cave in that film.
* Nightmare Fuel: 
** As in the comics, The Batman Who Laughs. The sight of someone with the Joker, but with the tactical mind and knowledge of the Batman, makes him a downright terrifying foe you do not want to meet.
*** His first scene has him attacking the Joker and Harley Quinn. While Joker is at first laughing like always, the laughs end when he finds someone The Batman Who Laughs killed by ripping off his skin, leaving his organs to fall apart abd his skeleton to lie in the grpund alongside the skin. Harley says "Oh my god!" and the Joker simply says "You're not Batman" in a geniunely horrified tone. And when the Batman Who Laughs comes out of the darkness, all the Joker does is to run away in fear. Never has any theatrical incarnation of the Joker has been so terrified he drops all lsughs and makes a run fir it (the closest being the climax for Tim Burton's Batman. And even then, he choose to fight the Dark Knight for a while instead). This is what made us known The Batman Who Laughs is one to be feared.
*** Hell, the chade between the Joker & Harley and The Batman Who Laughs is this. Obe would never expect to see that couple experiencing how it is to be in a horror film as the vicyims, yet we are left geniunely qorried for their lives there.
*** The first fight between Batman and The Batman Who Laughs. If you want to call it that. First, he attacks Wayne Manor out of nowhere by entering the Batcave, something only Jim Carrey's Riddler ever did in a live-action film. Oh, and every attack Batman throws, from fight moves to Batarangs? Because this is an alternative Batman, he instantly overcomes them or counterattacks. Abd since this is a Jokerized Batman, he does it in extremely saddistic and extremely painful manners.
*** Many of his movements while chasing diwn his foes makes him seem less like an evil Batman and more like a predatory animal hunting down his prey.
**The Joker may be a deuteragonist, but he's still terrifying. During their meeting, he gives Batman a lecture that leaves the Dark Knight geniunely unnerved. And he knows that Batman can't just leave due to the current situation, which is why he gives him such a lecture in the first place.
* Oh, Crap: The Joker of all people indrgoes this after meeting The Batman Who Laughs.
* OOC Is Serious Business: The Joker is never one to run in fear. So when he does that right after his first meeting with the Darkest Night, you know he is trouble.
* The Only One Allowed to Kill You: How the Joker feels about killing Batman, which is why he kills The Batman Who Laughs at the end.
* Role Reprise: Ralph Fiemnes returns as Alfred from The LEGO Batman Movie.
*Shout-Out:
** The opening scene with Clayface was an homage to King Kong.
** The Batman Who Laughs detonates a Batarang at Batman's face in reference to the climax of Spider-Man (2002).