Never Trust a Trailer: The trailers have a habit of adding bleeps over dialog even when the speaker isn't actually swearing. Harley and Ivy look out at the smoking ruins of Gotham and call it beautiful like the end of Season 1. Parademons are normally depicted as being a serious threat that requires either serious superpowers or overwhelming firepower to take down. Here, Harley can easily kill them with nothing but a baseball bat. Harley demands, "What's the point of having an elevator that doesn't work?" - an Actor Allusion to Kaley Cuoco's other big role, where there was a famously non-functioning elevator. It's All My Fault: Ivy blames herself for hurting Kite Man and ruining the wedding, with her villainous friends being arrested. While the former is pretty true, she had nothing to do with the latter as it was Gordon's plan.

Scarecrow bites the dust in season 1, followed by Penguin, Mister Freeze, and Condiment King in season 2. They all stay dead. Batter Up!: Harley's giant mallet gets destroyed in the fight with the Joker's gang, so she trades it out for a baseball bat she steals from one of the mooks. Later on, she gets another bat with her playing card motif painted over it. In Season 1, a reporter at "Metro 7" reported on Harley Quinn, Poison Ivy and The Riddler's escape from Arkham Asylum. At a later date, she is seen briefly when Harley flips through various news programs as she reports on the Joker's robbing of a credit union being stopped by Batman on Channel 10.Forgiven, but Not Forgotten: Harley eventually makes it clear to Ivy that while she's accepted all of Ivy's apologies for snapping at her, she hasn't forgotten how often it is. She even says that if she wanted to be put down every day, she'd be with Joker. Amplified Animal Aptitude: Harley's hyenas must be pretty intelligent to understand and laugh at Ivy teasing Harley. Bane is still mad at Todd the barista from the " A Seat at the Table" episode from Season 1, and still wants to kill him.

The episode " Harlivy" later contradicted some of the events of this issue. While in the comic, Clayface and King Shark are seen in Harley and Ivy's hideout calling Barbara Gordon about Harley's whereabouts during the first few days of Harley and Ivy's vacation, the episode instead reveals that King Shark and Clayface have been in Arkham Asylum in the nineteen days since the wedding, apparently having been captured by Gordon himself on that same day. Bane’s minions wear elaborate lucha libre outfits, signifying Bane’s Hispanic heritage and penchant for wrestling moves. Sweet and Sour Grapes: Its only when Harley gives up trying to get Ivy to openly reciprocate her love and instead tries to protect Ivy's wedding with Kite Man that Ivy is convinced that Harley has become trust worthy enough for her heart.Limelight Series: While Harley is obviously big enough to have her own show, her supporting cast is made up of lesser-known DCU villains like Dr. Psycho, King Shark and Clayface note known as part of Batman's Rogues Gallery but overshadowed by bigger villains in mainstream pop-culture. Ivy gets a recurring love interest in Kite Man, whose very existence is otherwise used as a joke. Age Lift: Several of the characters are said or implied to be somewhat older than in the comics, where their age is intentionally left vague. The season 1 finale explicitly states Joker is 38, and in season 3 it's said Bruce Wayne's parents were murdered "30 years ago", meaning that he's in his late thirties too. And in "Riddle U", when Harley and Ivy disguise themselves as college girls, they dress up in turn-of-the-millennium style (the joke being they think the fashion of their own college years still looks youthful), which would suggest they're roughly the same age as Batman and Joker. Gordon frequently peppers what he says with mentions or descriptions of anatomy and internal organs — often his own, to gross effect. Everyone Is Related: Turns out JT and Reign, two civilians who helped out Harlivy during their road trip are the kids of gossip queen Tawny. Hypocrite: While the Legion expels Dr. Psycho from the group for his blatant sexism, this doesn't stop them from continuing their own sexist practices, with no female members of the group shown before Harley is brought in... just so Joker can emotionally manipulate her again; the lot of them leaving the Queen of Fables to rot in a tax book for years; Lex Luthor gaslighting Ivy at the Joker's behest; Scarecrow kidnapping her, drugging her, and stealing her blood; and other terrible behavior.