Since debuting on "Batman: The Animated Series" in 1992, Harley Quinn has become one of DC's most iconic characters, and for good reason. Originally intended to be a one-shot character acting as a comic relief henchwoman of the Joker (Mark Hamill), Quinn was introduced in the BTAS season 1 episode "Joker's Favor" (via ). The character quickly became a staple of the Batman family, fitting right alongside the Dark Knight's wild rogues gallery. Her popularity has since transcended the acclaimed animated series to be featured in numerous comics, TV shows, and live-action films, including Margot Robbie's beloved interpretation in the DC Extended Universe and Lady Gaga's upcoming turn as the character in 

Another more recent interpretation of Quinn that has seen a good amount of attention is Kaley Cuoco's version from the adult animated series, Beginning in 2019, the show follows the high-octane misadventures of Quinn, her girlfriend Poison Ivy (Lake Bell), and their band of Gotham baddies as they set off to make it on their own. The show, , has been received positively by both fans and critics, with an 89% Tomatometer score on . Much of the praise has gone to the show's darker, more adult-oriented tone that TV audiences have been longing to see from the character, especially in such a fun animated setting.

Thankfully, it hasn't only been audiences that have enjoyed the down-and-dirty feel of the series.

Cuoco can't get enough of the R-rating

In an interview with , the voice of the titular antiheroine from "Harley Quinn," Kaley Cuoco, admits that she is a fan of the show's R-rating. "I have loved the whole R-rating with Harley Quinn," the actress said, also mentioning that she enjoyed Margot Robbie's portrayal in "I've loved the swearing. I've loved the screaming. I've loved the aggressiveness.

It's totally insane and totally inappropriate — that's why I love it," Cuoco said. The actress is also a producer on the series with her production company, , and will be returning to the wild world of Gotham, as the series has been renewed for a fourth season. Along with Cuoco remaining as producer, the series will see writer Sarah Peters take over as new showrunner (via ). A spin-off based on Kite Man currently entitled "Noonan" was also recently for HBO Max.

It seems no matter which tone we see the misadventures of Harley Quinn basked in, the lasting appeal always remains. In an interview with , Margot Robbie discussed what she finds enduring about playing Quinn after doing so under three different directors, saying, "I really find that people gravitate towards different characteristics of her. And there is so much to her, and there's a lot of great fun qualities, and there's a lot of bad qualities that are also very fascinating to play with."