Harley Quinn

In the series premiere, Harley Quinn (KALEY CUOCO) is fed up being the Joker's sidekick and strikes out on her own – determined to become the criminal Queenpin of Gotham City.

Determined to become one of the vaunted Legion of Doom, Harley attempts to make a big splash by crashing one of their criminal enterprises with the help of her BFF, Poison Ivy.

Realizing she needs a crew to pull off heists that will attract the Legion of Doom's attention, Harley attempts to recruit Dr. Psycho (TONY HALE) and Clayface (ALAN TUDYK).

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

When Harley suffers a paralyzing identity crisis, her crew must enter Harley's mind to free her with the help of Dr. Psycho's telepathic powers.

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

Harley breaks the Queen of Fables (WANDA SYKES) out of prison to add some evil oomph to her crew – but maybe Fables is a little TOO evil?

Harley gets an invite to the Legion of Doom's prospective members party, but Poison Ivy (LAKE BELL) discovers that it's her they're really after.

Now a member of the Legion of Doom and The Joker's equal, Harley finds herself spending time with him. Will she slip into her old ways?

After a falling out with her crew, Harley heads back home to Bensonhurst, where he doting mother waits for her...and her deadbeat dad, who's more dangerous than anticipated.

Harley must rescue Ivy from the clutches of Scarecrow (RAHUL KOHLI), who's trying to harvest her pheromones to make a super toxin that turns plants into sentient monsters.

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

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]!