Fridge pages are Spoilers Off. You Have Been Warned.
- Why was the villain for the prologue Canon Foreigner Paris Franz and not someone connected to the Joker? The way Franz treated Batgirl, blowing her kisses when they make eye contact, the creepy flirtatious banter during the fights, singling out the redhead hooker and having her wear an improvised Batgirl mask, constantly vying for her attention when committing his crimes, professing love for her into a news camera. Paris Franz is treating his relationship with Batgirl almost exactly the same way Joker treats his relationship with Batman, Joker treats Batman as a Friendly Enemy, Franz treats his relationship with Batgirl as a case of Dating Catwoman.
- Assuming Dick Grayson became Nightwing and had a relationship with her, Batgirl's out-of-character moments make more sense when you realise that he had recently shacked up with Starfire and didn't spend as much time with the Bat Family as he used to.
- Also, even though she doesn't suffer it to the same extent as Batman, Joker, or her father, Barbara's encounter with Paris Franz can almost be seen as an allusion to her having one bad day of her own. When she sees Franz hurting Batman, she loses it, almost pummeling him to death, leaving her deeply shaken afterward. Batman was telling her about the danger of the abyss - for Barbara, the realization that she nearly murdered Franz with her bare fists might have been her brush with that abyss. Not quite the "one bad day" that Batman and Joker had, where they lost everything and everyone dear to them, but bad enough to make her quit being Batgirl. And then Joker shoots her...
- At the very end, Batman and the Joker have their first real heart-to-heart, culminating in the famous joke. How does the audience know Joker means what he's saying? He blew the delivery of the punchline. That used to be his biggest failing as a comedian, according to the origin story.
- During the vault robbery, Paris sprays Batgirl with what appears to be knockout gas in a canister. Then as she's losing consciousness he holds her against him and talks to her about a "goodnight kiss". Why does he carry around a pocket-sized dispenser of knockout gas? Given his obsession with Batgirl that makes you wonder about the implications of why he had knockout gas (unlikely as a weapon since he also had a gun and had a fixation on Batgirl at that point), and the possibility that he may have raped Batgirl if she hadn't kneed him in the groin and sealed herself in the vault before losing consciousness.
- While chasing Joker, Batman nearly falls into a spike pit. When some of Joker's goons attack Batman as he's climbing out, Batman tosses them away - towards the spikes.
- The Batman: Arkham Series has established some of The Killing Joke to be canon in its world - namely, Joker shooting Barbara during a flashback in Batman: Arkham Knight, Joker as Red Hood going into the acid at Ace Chemicals in Batman: Arkham Origins, and Joker telling Hugo Strange, "As a wise man once told me, if I'm going to have a past, I prefer it to be multiple choice" in Batman: Arkham City. So it could be safe to say that the events of this movie were something that happened in the Arkhamverse. Batman and Joker's last conversation in The Killing Joke is sad in its own right: "I've the feeling that you and I are on a suicide course. This may be our last chance... Let me help you..." "No, no, I'm afraid it's far too late for that." Batman seems to earnestly mean his offer to rehabilitate Joker, and Joker seems genuinely sad when he tells Batman no. But then, consider what happens at the end of Arkham City, and it becomes almost prophetic: Batman contemplates how the Joker will keep killing people in their mad repeating scheme, seemingly closer than even to letting Joker die, and Joker interprets it as such... and then Batman admits to Joker that he would have saved him, just before Joker dies. The tragedy of their whole sick relationship was never more painful illustrated than between those two conversations in The Killing Joke and the Arkhamverse. Even sadder because Kevin Conroy and Mark Hamill are once again bringing their finest performances to these two characters.
- Given the frequent disregard Batman has towards Barbara it makes one wonder just what kind of a relationship this version has with Dick Grayson?
- A meta example when you consider Barbara's role in the story is used to further highlight more differences between Batman and the Joker, using her sexuality. She has "consensual" sex with Batman, who tries to avoid her. And later in the story, she is raped by the Joker, who is said to have a strong sex drive and frequently sought after prostitutes whenever he broke out of Arkham.
