In Suicide Squad, Jared Leto puts his spin on The Joker, though it will be tough to top Heath Ledger’s rendition of the maniacal character. This time, the Joker shows more street style with a set of grills and plenty of ink.

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.

In the DC Comics, Deathstroke (real name Slade Wilson) is a mercenary and assassin. Originally an enemy of the Teen Titans, he’s worked his way up the supervillain chain to face off against the likes of Green Arrow and Batman.

Dick Grayson adopts the identity of Nightwing after outgrowing his position as Batman’s sidekick Robin. Like his mentor, Nightwing’s parents were murdered by a mobster in Gotham when he was just a young boy.

In Suicide Squad, Harley Quinn is the same crazed psychiatrist turned supervillain, but Margot Robbie’s is different from the usual take on Harleen Quinzel. One that’s less court jester and more of a deranged, bloodthirsty baseball player.

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.