Over 10 seasons and counting, Dropout’s trivia quiz show Um, Actually has hosted plenty of big-name nerds from outside the streamer’s usual roster of talent. Critical Role’s Matthew Mercer has a few wins under his belt, Marvel Comics writer Cody Ziglar recently took home the crown in the season 11 premiere, and season 9 ended with an episode where all the contestants were voice actors, like Dante Basco, who played Zuko in the original animated run of Avatar: The Last Airbender.