After Harley receives access to Bruce Wayne's mind, she gets stuck in an endless loop of his most formative memory.

Harley crashes Ivy's wedding to stop Gordon and his officers from interrupting the nuptials.

Acting as a judge, Two Face sentences Harley and Ivy to life in Bane's prison. Meanwhile, Jim Gordon and Batgirl vow to take back the GCPD from Two Face.

Harley thinks the Legion of Doom is behind Ivy's capture and the tree monsters currently ravaging Gotham. But it's a trap!

Harley Quinn is fed up being the Joker’s sidekick and strikes out on her own – determined to become the criminal Queenpin of Gotham City.

In search of a nemesis, Harley goes after Batman, but ends up with an adolescent Robin, making her the laughing stock of the criminal underworld.

In the season finale, Harley has her final showdown with the Joker, when [spoilers] [spoil] [spoilers]. Will they [spoiler]? Maybe. But you can bet they [spoiler]!

Psycho unleashes a mind-controlled Ivy, Clayface, and King Shark on the Justice League who are trying to free Gotham.

In order to defeat Psycho's army, Harley & Joker need to track down Fables' storybook with the Justice League inside.

After her terraforming plan goes awry, Ivy is enticed by an offer to take over the Legion of Doom, while Harley questions her path forward.

Harley and crew try to infiltrate Mr. Freeze's lair only to become human lab rats for his experiments to find a cure for his cryogenically frozen wife, Nora.

Bruce Wayne awakens from his coma to Gotham in chaos.

It's Bachelor/Bachelorette weekend for Ivy and Kite Man.

When Harley and Ivy spot a seemingly sane Joker, they debate whether people can change at their core, revisiting a flashback about Harleen Quinzel's first day at Arkham Asylum.

When Clayface loses his arm in a heist, it turns out to be not only evidence for Jim Gordon, but also a key witness against Harley and her crew.

When The Joker runs for mayor of Gotham, Two Face attempts to sabotage his campaign.

Harley goes overboard in her attempts to give Ivy the best Valentine’s Day ever. Bane’s efforts to impress an unexpected date go horribly awry. Clayface engages in some self-love.

Brainiac has one last task to finish before he can be promoted within the Coluian government -- but unforeseen variables change his life forever.

With tensions between them at an all-time high, Harley heads to Bensonhurst for a family emergency, while Ivy vows to take down Lena once and for all.

After Lena divulges Brainiac's plans to the Daily Planet, Harley, Clayface, Bane and Frank try to take him down with an original musical.

When Batgirl goes missing, Harley goes on an adventure with her roommate, while a spotlight-shy Ivy connects with a PR team after her Malcon success.

The team gains a surprising new addition in the wake of a devastating loss. Meanwhile, as Ivy and Harley set out to bring the murderer to justice, Bane must protect Goldie and the other school kids from citywide destruction.

While Ivy's first day of work brings an unwelcome surprise, Harley juggles babysitting, landing a club membership, and her new friendship with Lena.

Despite closing the door on her academic trauma, Ivy's past still haunts her. Clayface confronts the Daily Planet's top brass after a bad review.

No longer Gotham's "...Most Exciting-est Couple Ever," Harley and Ivy decide to shake things up at Metropolis' event of the year.

Harley investigates the sudden death of a hero, while Ivy tries to take down the Jons and Joker announces a career change.

Old wounds and fears bubble to the surface when Harley and Ivy are invited to a meet and greet for their condo building.

Harley, Ivy and Sharon team up with Brainiac to save the universe from Lex and Lena's total domination.

As Harley and Ivy attempt to save Metropolis from complete destruction, Bruce, the Joker and Lois form an unexpected alliance.

After fleeing the wedding, Harley and Ivy go on an "Eat Bang Kill" tour that leads them to a secret project Ivy abandoned years ago.

In Vegas for some much-needed QT, Harley struggles at the Strip's evilest hotel while a desperate lvy tries to secure tickets to Clayface's show.

After breaking the Bat Family’s #1 rule, a demoted Harley shadows Alfred, while Ivy finds an unexpected mentor at a networking event.

While Lex lays siege to the LOD after coming up short with his Ozone Machine, Bane travels to Italy to fix a pasta-maker… and win Nora’s affection.

When Frank goes missing, Harley and Ivy follow clues that lead them to a highly unconventional party alongside Gotham’s elite, including Commissioner Gordon – who is hungry for campaign donations.