Well, Hal Jordan had to go through a four-year-long course of training so that he could get the Green Lantern title. But at the same time, Harley Quinn skipped the hard work and earned the title after winning an online auction. In the Harley Quinn comic book by John Timms, Amanda Conner, and Jimmy Palmiotti, while camping out at Bryce Canyon, two hikers come across an alien spacecraft crashing into a nearby forest filled with three Lanterns rings (Green, Black, and Red).
Moving ahead, the aliens offer to trade with these humans to repair their ship. However, after some dispute over what the rings could do for them, the campers simply start fighting over what to do with the Lanterns and accidentally spill some milk between them causing the Red and Black rings to merge. Now that they didn’t want another chaos to happen, they decided to sell it off and it was Harley Quinn who apparently places the bid and thus, wins the ring.
Related: Reasons Why John Stewart Is The Most Underrated Green Lantern
When Harley Quinn Became The Green Lantern
After the Black and Red Rings have been placed upon Quinn’s fingers she becomes a force to be reckoned with. As a result, Harley is dangerously driven to unleash her savage nature. This version of not only her, but the reality is so unstable that her mayhem could potentially cause Earth’s destruction! She has both rings for just a couple of minutes (which doesn’t feel like it at all) and teeters on the verge of being out-of-control. However, she masters the Green Ring with amazing aptitude–even though another Green Lantern was overwhelmed by it–and proves that she is indeed capable of an alien invasion alongside other stellar heroes in the Justice League.
Related: Insanely Wild Facts About Green Lantern’s Power Ring
How Powerful Is Harley’s Version Of Green Lantern
Harley Quinn’s tales have been relegated at worst to that of a joke, or at best unmentioned. The comics lack sufficient respect for the character and do not suggest the level of badassery she possesses as Green Lantern. Her tales, for example, Harley’s Little Black Book got her on par with Batman and even led to her beating Wonder Woman and Superman. One could argue without hyperbole that if it were not for her allegiance to the Joker, Harley would’ve succeeded in becoming a successful supervillain rather than just his accomplice.
Perhaps it’s time to take a step back from all the Harley Quinn break-ups and controversies and look at her as a person who has some serious skill when it comes to kicking asses. She can literally do anything. From crippling one of the greatest Green Lanterns alive by simply providing him with so many cupcakes that he explodes outwards in all directions, to killing off Booster Gold, Black Canary, big bad Lobo, and even Shazam.