Karl Urban announced the spinoff that will reveal "unseen stories within The Boys universe, brought to life by some of the most creative minds in entertainment today" Sunday during a panel at CCXP Worlds 2021. Diabolical was named after the famous catchphrase from Urban's Billy Butcher. "We gathered together some incredible creators and we gave them one rule… just kidding, there's no rules," said The Boys showrunner Eric Kripke. "They blew the doors off it, delivering eight completely unexpected, funny, shocking, gory, moist, emotional episodes. You think The Boys is nuts? Wait till you see this." The Boys: Diabolical is expected to premiere in early 2022.