Alexander Michael Brightman is an American actor and singer, best known for his work in musical theatre, specifically as Dewey Finn in the musical adaptation of School of Rock and the titular character in Beetlejuice The Musical. Both roles earned him nominations for the Tony Award for Best Actor in a Musical in 2016 and 2019 respectively. Since 2020, he has voiced Robo Fizz and Fizzarolli in the adult animated musical animated series Helluva Boss, and since 2024, he has starred as Sir Pentious and Adam in Hazbin Hotel.