The brand-new Suicide Squad: Kill the Justice League trailer features an Easter Egg that honors the comic book origins of main characters Captain Boomerang, Deadshot, and King Shark.As reported by GamesRadar.com, the Suicide Squad trailer, which debuted at DC FanDome 2021, gives us another glimpse at these four characters and one scene at the beginning shows them in prison garb. While that alone may not be too surprising considering these characters have dark pasts, the numbers on their clothes reference their first appearance in the comics.Captain Boomerang sports the number 117-12-60 and it is a reference to his first appearance in The Flash #117 in December 1960. Deadshot’s inmate number is 59-06-50 and honors his debut in Batman #59 in June 1950.King Shark, who is wearing a prison uniform that hints he was transferred from Belle Reve Federal Penitentiary, has the number 001094 – a reference to his first showing in Superboy #0 in October 1994. For those unaware, Belle Reve is one of the main prisons where Amanda Waller finds her recruits in the comics and films.Harley Quinn does not appear to have a number, and this actually makes a bit of sense as she did not make her first appearance in the comics. Harley Quinn was first shown in Batman: The Animated Series long before she made the jump to the pages of comic books.The Suicide Squad trailer from DC FanDome 2021 gave us a much better look at the world Rocksteady is creating, and gave us our first look at The Flash, Green Lantern, and Wonder Woman.While we didn’t get any release date news besides a reconfirmation that the game will be released in 2022, we did learn much more about the game’s story. What starts as a mission against a seemingly alien threat quickly becomes a race to kill the corrupted versions of some members of the Justice League. While we did see some of the Justice League members in their corrupted form, Batman has yet to show his face. We did get a glimpse of the Batmobile, but that’s about it. Suicide Squad: Kill the Justice League can be played either solo or with up to three friends and will feature customizable weapons, unique abilities for each character, and much more.Have a tip for us? Want to discuss a possible story? Please send an email to firstname.lastname@example.org.Adam Bankhurst is a news writer for IGN. You can follow him on Twitter @AdamBankhurst and on Twitch.