Harleen Quinzel (Earth-4605)

"It's my fault, really. I didn't get the joke. And that's the worst thing for comedians, they always take shots from folks who just don't get the joke."

- Harley Quinn

Harley Quinn is the Joker's girlfriend and a member of the Suicide Squad.

Trivia

 * The actress portraying Harley, Cristin Milioti, is a natural brunette. This is a reference to Harley saying in Batman: the Animated Series "Joke's on you, I'm not even a real blonde."
 * Harley's first ever kill was her boyfriend, Ben.
 * The only person who has ever been able to make Harley question her feelings for the Joker is Poison Ivy.
 * More to be added...