Tropes:
- 10-Minute Retirement: Bruce Wayne quits being Batman for the sake of his marriage. Dick knows the retirement won't last even before he learns Susan's true nature.
- Accidental Murder: Overlaps with What Measure Is A Nonhuman. Bruce was only protecting himself from Susan when locking her in their cabin. While he was using lethal force against Ivy's creations, he did not mean for Susan to suffer a slow death by drowning. His only response after he watches her go down with the ship, however, is to toss his wedding ring into the water.
- Almost Kiss: Poison Ivy attempts to use her Kiss of Death on both Batman and Robin at different points, but only manages to pucker up and lean in slightly before being interrupted both times.
- Badass Bystander: After Ivy reveals she created all the so-called perfect husbands and wives of Gotham's millionaires and plans to leave them for dead on the sinking ship, one of the women on-board asks if they're all just going to stand around while Ivy tries to kill them and incites a riot against the plant people.
- Bait-and-Switch: At Bruce and Susan's wedding, Dick remarks "I give it a month," with Barbara in ear-shot. When she asks if he's talking about the marriage, he clarifies that he means a month until Bruce is back in the bat-suit.
- Bittersweet Ending: Man, poor Brucie just can't catch a break. He manages to save himself and Gotham's millionaires, but at the cost of letting Susan die and realizing he was tricked into marrying her.
- Bouquet Toss: Bruce Wayne, having caught the garter, chats up a woman who caught the bouquet and strikes up a romance with her.
- Black Widow: Poison Ivy's scheme is this; she figures, why seduce one millionaire when she could use her plant-clones to seduce and marry a dozen of them, then wipe them out in one staged yacht accident. Only flaw is, Bruce Wayne is one of her targets. (And ironically, this is not the first time her plan failed for that reason, the first being in "Eternal Youth").
- Call-Back: Ivy's last appearance back in Batman: TAS revealed she could make people from plants. Looks like she managed to perfect it enough that she doesn't need clones.
- It's possible she still does - we just never see the originals or learn who they were. And
there may be a good reason for it...
- It's possible she still does - we just never see the originals or learn who they were. And
- Continuity Cameo: Leslie Thompkins, Summer Gleeson, Kirk and Francine Langstrom, Zatanna Zatara and Jason Blood can all be seen in the background at Bruce and Susan's wedding.
- Domestic Abuse: Once Michael shows his true colors, he starts acting like a typical abusive husband to Veronica, down to him trying to assault her and Veronica striking him with a table lamp while trying to escape his wrath.
- Double Entendre: Poison Ivy, twice.Poison Ivy (to Robin): Time for a goodnight kiss.
Poison Ivy (to Batman): Pucker up. - Fourth-Date Marriage: Veronica Vreeland marries her fourth husband Michael after two weeks of dating. And Bruce proposes to Susan on their second meeting.
- Gold Digger: Poison Ivy created one for each wealthy person in Gotham.
- Held Gaze: A short one between Poison Ivy and Batman. When Poison Ivy gets Batman on his knees after stunning him with her spores, she grabs him by the chin and forces him to look up at her. She chuckles at him for a moment while holding him and staring down at him, before telling him in a false seductive voice to pucker up, slowly leaning in and puckering up herself before closing her eyes in anticipation.
- Inheritance Murder: When Poison Ivy arrives at the honeymoon cruise, she reveals that she crated the billionaires' mates to emanate pheromones so that the billionaires would fall madly in love and leave everything to them. Once everything was legally finalized, Ivy would get the mates off the pleasure cruise, sink the ship, and be in control of the deceased billionaires' money. Luckily, Batgirl and Robin arrive in the nick of time, and they and Batman stop Ivy before she enacts her plan.
- Kiss Diss: Unlike most of her victims, Robin isn't too keen on swapping spit with Ivy, doing his best to not let her lock lips with him.
- Kiss of Death: As usual, Poison Ivy tries this on Batman... and this time on Robin too. She is interrupted on both her attempts.
- Love Potion: Although it was a "just to get your attention" potion.
- More than Mind Control: Susan explains that Ivy's love pheromones are only to get the target's attention. Beyond that, each plant person is tailored to perfectly match the personality of their subject in order to ensure they don't get wise even when the pheromones wear off.
- Mrs. Robinson: Robin maybe only a teenager but that doesn't stop Ivy from trying to kiss him, with her aggressive shirt tugging and flirtatious tone making her come across like a cougar at a bar who won't take no for an answer.
- Naughty Birdwatching: Batman watches Susan while she is at her apartment. It's just to learn what flowers she likes... probably.
- Not Good with Rejection: An interesting vampish spin on this trope because, while Poison Ivy was doing it to murder him, her face gets increasingly pissed off as Robin strains his neck to avoid Ivy's puckered lips.
- Pretty in Mink: One of the would-be victims of Ivy's plan wears a fur wrap on the yacht.
- Put on a Bus: Sadly this is Veronica Vreeland's last appearance on the show.
- Red Eyes, Take Warning: In this case, the clones all having green eyes is a tip-off something is wrong.
- Save the Villain: Played straight with Poison Ivy, averted with Susan. Although the ship is sinking, not giving him much time to mount a rescue, Bruce as Batman simply stands stonily as his "wife" bangs on the cabin door in desperation.
- The Scrooge: One of the rich guys Poison Ivy tries to kill is happy that his wife is even more of a penny pincher than he is.
- Stepford Smiler: Susan and the other plant people function as the perfect spouses, to the point of pretending they're perfectly fine with whatever their target asks of them. Her being less jealous (about visiting a distressed Vernoica) than Bruce expected was his first clue to something being wrong. His second (more incriminating) clue is hearing the other wealthy newlyweds fawn over how their respective spouses match their personalities a little too well.
- On a funnier note, when Poison Ivy reveals her plot to her "children's" spouses, one of them tells her frugal husband "So long, cheapskate", despite having been described as being just as frugal. If anything, this confirms the plant people's "perfect" personalities are only a façade.
- The Tease: Poison Ivy, per usual, acts playfully flirtatious around those she's decided to pull in for an unhealthy embrace. In this case Robin followed by Batman.
- Too Good to Be True: Bruce Wayne realizes almost too late that these ideal mates everyone on the ship—including himself—has are just far too perfect in every way to be real. As Susan herself points out when he tells her that he should have realized a whirlwind romance like theirs was just too easy, "Love isn't supposed to be easy. Even I know that, and I'm just a vegetable!"
- Uncertain Doom: Depending on whether or not one takes the events of Batman and Harley Quinn as being canon, as well as whether the Static Shock episode "Hard as Nails" takes place before or after this episode, this marks Poison Ivy'snote last chronological appearance in the DCAU with her being pulled under by a sinking ocean liner, possibly drowning.
- [Verb] This!: When Poison Ivy tries to use her lethal kiss on Batman.Robin: Kiss this! ( *WHACK* )
- Villain Has a Point: Upon learning that Susan is a plant creation by Poison Ivy, Bruce deduces that he should've seen it coming that she used Ivy pheromones to attract him to her. To this, Susan points out the pheromones had nothing to do with him falling for her so easily, so much as they got his attention. If anything, she explains that his real folly was blindness at how their relationship blossoming was "too easy", as real relationships take work. To add insult to injury, she lampshades that for a plant person created a short while ago, even she knows this fundamental fact.
- Villainous Face Hold: Poison Ivy manages to stun Batman with her spores and make him fall to his knees. She grabs his chin and forces him to look up at her, chuckling at him briefly before leaning in and attempting to kiss him. Fortunately, Robin saves Batman before Ivy can carry through with the kiss.Poison Ivy: Pucker up.
- Wham Shot:
- Veronica is trying to get away from husband Michael, activating a laser grid. He just walks through the grid, the lasers burning holes into his skin which easily heal.
- Michael goes to see Poison Ivy, opening his shirt to show Veronica found leaves on his chest. Ivy responds by peeling off his skin to reveal he's a plant creature.
- What Measure Is a Non-Human?: Bruce Wayne is briefly engaged to a woman who turns out to be a plant clone created by Poison Ivy who he has a very emotional romance with. Bruce and many other wealthy people had been subdued by their new wedding partners through the effect of pheromones and the like. However, once it was revealed that these people — who behaved like thinking, feeling, speaking creatures — were not human, Batman, Batgirl and Robin kill them all. Sure, they were evil plant-people, but if they'd been human con artists the story would not have ended that way.
- When He Smiles: This may be the closest point in the series that Bruce Wayne actually felt happy. He really doesn't understand what this "happiness" is.
- Would Hurt a Child: Poison Ivy attempts to kill the 13-year-old Robin with her poisonous kiss.
