At Comic Con, where attendees show off meticulously prepared costumes inspired by their favorite fictional characters, one generally does not dress up as the Joker without knowing which Joker they are.

Are they Heath Ledger’s Joker from “The Dark Knight?” Are they Mark Hamill’s cartoon villain? Or Jared Leto’s, or Jack Nicholson’s? Or have they harkened all the way back to the 1960s to portray Cesar Romero’s merry prankster version?

At this weekend’s convention at the Javits Center in Manhattan, there was a new Joker character to consider. The “Joker” movie opened in theaters this weekend, and this rendition of the comic book character, played by Joaquin Phoenix, has drawn scrutiny for exhibiting psychological traits of real-life mass shooters.

The chilling twist to the Joker’s past has been criticized for having the potential to inspire young men with similar inclinations. At Comic Con, some costumed Jokers clung instead to the characters of the past, while others embraced Phoenix’s tortured portrayal.