George “Digger” Harkness is a slimy, ugly scumbag who commits crimes by throwing boomerangs…which makes him perfect for the team of misfits and lowlife’s officially known as Task Force X, more commonly known by it’s nickname, “The Suicide Squad”. He may seem like nothing more than a common bank robber who throws toys around, but he has managed to be a match for The Flash and has proven his worth among the likes of lethal assassin Deadshot, the insane Harley Quinn and the monstrous Killer Shark in the Suicide Squad.

In 1989’s Batman, Joker (Jack Nicholson) becomes the Joker as we know him after mobster Carl Grissom sets up his second-in-command to be killed in a vat of chemicals. It doesn’t finish him off, but leaves him depraved and disfigured, with a maniacal laugh and deadly vendetta. Nicholson’s is a classic look that’s since been re-interpreted by Heath Ledger and Jared Leto.

In the DC Comics, Power Girl (real name Kara Zor-L) is the cousin of Superman and shares similar superpowers. Like him, she was sent away to escape the destruction of Krypton, but somehow ended up on a planet called Earth-Two instead.

In the DC comics, Batgirl is the female counterpart to Batman. Her true identity is Barbara Gordon, the daughter of Gotham’s police commissioner James Gordon. Much like Batman, she fights crime using a combination of martial arts, her wits, and an arsenal of high-tech gadgets.

In the parallel timeline dubbed Earth Two from the television show The Flash, Killer Frost (Danielle Panabaker), real name Caitlin, was a metahuman villain allied with her husband Deathstorm (Robbie Amell), Reverb (Carlos Valdes), and the evil speedster Zoom (Teddy Sears). Her ability to shoot frozen air out of her palms complemented her lover’s fiery fury. Similar to Earth One’s Killer Frost, she has an affinity for black leather.

In the 2005 film Constantine, John Constantine (Keanu Reeves) is a weary and cynical chain-smoker who, as in the TV series, is able to sense and communicate with half-demons and half-angels on Earth. He exorcises demons back to hell to earn favor with heaven and avoid eternal damnation for a suicide attempt in his youth.