These days, most people consider Harley Quinn one of the pillars of the DC media empire alongside Superman, Batman, Wonder Woman, and the Joker. But unlike those other heroes and villains, Harley's existence doesn't even predate the '90s. Her dark and problematic relationship with the Joker may seem like a core part of comic book canon, but it may never have happened if not for a soap opera and a cartoon. And while many kids will remember growing up with the trickster, she wasn't even part of the main DC universe until 1999.
Since her debut on the small screen and her jump to comics, Harley has become one of the best-sellers on the page, and she's spun out into various films and TV shows, not to mention a controversial video game appearance. But it's been a rocky road for the former sidekick, one that's seen canceled comics and a whole lot of pain.
She Was Invented As A One-Off Henchwoman In 'Batman: The Animated Series'
She Became The Joker's Loyal, Devoted, Psychotic Sidekick
'Mad Love' Introduced Her History As Joker's Therapist And The Origins Of Their Toxic RelationshipPhoto: Batman: Mad Love/DC
She Nearly Ended Batman, Prompting A Petty, Envious Joker To Throw Her Out A WindowPhoto: Batman: Mad Love/DC
In 'No Man's Land,' Poison Ivy Rescued Harley From An Earthquake And Imbued Her With Advanced PowersPhoto: Batman: No Man's Land/DC
Her First Solo Series Depicted Her Continued Obsession With Joker - And His Viciousness Toward HerPhoto: Harley Quinn/DC