Everyone knows Kevin Conroy and Mark Hamill as Batman and the Joker, respectively. Both earned worldwide fame for voicing the comic book characters in Batman: The Animated Series, which began airing in 1992. In addition to their animated counterparts, Conroy and Hamill voiced the archenemies in the Batman: Arkham series (dismissing Batman: Arkham Origins), as well as several more Batman-related media. Conroy and Hamill made their animated film debut in 1993’s Batman: Mask of the Phantasm, then went on to star in Batman Beyond: Return of the Joker, Batman: The Killing Joke, and more.
Conroy and Hamill reprised their roles in the 2015 video game Batman: Arkham Knight, but the very last time that the dynamic duo voiced these pop culture icons wasn’t even in a Batman-branded production, but rather a Scooby-Doo one. Boomerang’s Scooby-Doo and Guess Who? premiered in June 2019 and the thirteenth episode — titled “What a Night, for a Dark Knight!” — aired on Sept. 19, 2019. The story follows Mystery Inc. as they journey to Gotham City to meet with Alfred Pennyworth, whom they discover to have been kidnapped by Man-Bat. Batman swoops in to save the day, but much to his dismay, these meddling kids wish to offer him a helping hand.