Multiversity: Harley Screws Up the DCU is a 2023 miniseries by DC Comics starring Harley Quinn, written by Frank Tieri with art by Logan Faerber.
Harley Quinn receives an inheritance from a mysterious being named Professor Incredulous, which turns out to be a time machine known as the Way Back Booth. After using it to go back in time, Harley finds out that she's unwittingly erased all the DC superheroes from history and in the process enabled Starro to take over the world. It is now up to her and an alternate counterpart of herself who managed to resist Starro's control to fix the timeline and restore all the heroes to existence.
Multiversity: Harley Screws Up the DCU provides examples of:
- Alliance of Alternates: At the end of the miniseries, Harley finds out everything was started by a group of alternate versions of herself called the Council of Quinn, consisting of her Bombshells counterpart, her original DCAU counterpart, her Injustice counterpart, Old Lady Harley, a zombie Harley Quinn and a version who's an anthropomorphic hyena named Snarleen Quinzel.
- Bad Future: Because of Harley's meddling with the past erasing all the DC superheroes from existence, she ends up creating a timeline where Starro easily conquers the world due to there being no superheroes to oppose him.
- Black Comedy: Some of the ways Harley screwed up the timeline by preventing the superheroes' origins from transpiring are played for morbid laughs, such as accidentally stepping on the clay sculpture of an infant that was supposed to become Wonder Woman before Hippolyta wished for it to become a real baby girl, Barry Allen being fried to a crisp because of the arrangement of the chemicals knocked over by the lightning bolt that struck near him being messed up and Harley accidentally using a flamethrower on J'onn J'onzz when he first adopted his Martian Manhunter identity.
- Close-Enough Timeline: By the end of the miniseries, history is restored to how it was with the exceptions of the Barry Allen Flash stinking of monkey urine and Aquaman still being erased from existence.
- Fearful Symmetry: Happens when the two Harleys fight in issue #5. They find themselves matching each other move for move until they tire themselves out.
- Groin Attack: When time-traveling to Batman's origin, Harley is implied to slash up Joe Chill's groin.
- Ret-Gone: The central plot of the miniseries is that Harley Quinn finds out she's engaged in time-traveling shenanigans that inadvertently erased all the DC superheroes from history, then attempting to fix her mistake by going back in time once more to prevent herself from interfering with the superheroes' origins.
- Set Right What Once Went Wrong: The plot revolves mainly around Harley Quinn trying to prevent herself from erasing the superheroes of the DC Universe from existence by interfering with their origins.
- Something We Forgot: After the efforts that have been made to fix the timeline, it ends with the Council of Quinn failing to remember that they forgot to restore Aquaman to the timeline.
- Take That!: When beating up the Starro-possessed incarnations of her Gang of Harleys, Harley Quinn says that she's beating Harley Queens for saying that George Clooney is the best Batman, an unsubtle jab at Batman & Robin.
- Toilet Humour:
- Harley's effort to restore Superman's origin has her and Bolly Quinn caught attempting to take the clothes of Kal-El's nannies and convincing Lara Lor-Van to hurry along in sending her son to Earth by claiming that there's an epidemic of space diarrhea going around.
- After accidentally squashing the clay sculpture that would become Wonder Woman, Harley compares it to poop.
- Barry Allen's origin restoration has Harley mistakenly include a jar of monkey urine among the chemicals he's supposed to be exposed to, resulting in Barry smelling like monkey urine in addition to gaining super speed.
- Zorro Mark: When time-traveling to Batman's origin, it is shown that Harley disrupted the theater's showing of The Mark of Zorro (1940) by slashing a Z into everything, inadvertently preventing Bruce Wayne from being orphaned by slashing up Joe Chill's crotch before he had a chance to shoot Thomas and Martha Wayne.
