Hazbin Hotel is a musical series that showcases Charlie opening a hotel named Hazbin, a therapy and recovery center. Adam is the show's major antagonist, portrayed as arrogant and depicted as Heaven’s executioner. Fans who are thinking about the character's voice must know that it was the American actor, singer, and stage performer, Alex Brightman, voicing Adam in Hazbin Hotel.
The actor is best known for his work in musical theatre, while his background and career are pretty interesting to note. This background made him a natural fit to voice animated musical shows. Read on to learn more about the notable projects of Brightman.
Who voices Adam in Hazbin Hotel? Actor’s career explored

As mentioned, Adam is voiced by Alex Brightman, an American actor and singer. His background and experience made him a perfect fit for the musical drama. Known for his musical theatre work, making a shift to voice acting in a musical drama is a smart shift. Here is a list of some notable works of Alex Brightman.
School of Rock: The Musical (2015–2016)
Alex gave life to the lead role when Webber adapted the Jack Black film to Broadway. The role required intense vocal stamina, portraying a high-energy rock persona, especially given the medium in which actors perform in front of live audiences.
For his phenomenal performance, he earned a Tony Award nomination for Best Actor in a Musical in 2016. Being someone who is best at balancing his musical performance with fictional drama and humor, he became a natural to voice animated shows and films like Hazbin Hotel.
Beetlejuice: The Musical (2018–2020)
Beetlejuice was another career-defining performance of Alex Brightman, who owned the stage with his chaotic and comedic voice. He crafted a technique specifically for the role and received his second Tony Award nomination for Best Actor in a Musical in 2019.
Something Rotten! (2015)
In this stage play, Alex performed multiple roles and understudied key comedic characters. This work helped him further sharpen his timing and character-switching skills, which later came in handy as he shifted to voice acting for animation work.
The list is never-ending when it comes to Alex Brightman and his musical dramas.
The Little Mermaid, which was introduced in 2008 and was performed until 2010, was his early career project where he played one of Ursula's sidekick eels. The role was physically demanding and used puppetry and movement. This was the foundation that established them as a reliable Broadway ensemble actor before their breakout leads.
In 2013, the popular Matilda story was adapted to a stage play, and Alex played Matilda's goofy older brother. This is how he continued to test various genres and build range in comedic and family-friendly theatre.
This theatrical background gave the actor an edge in voice acting and animated work as well. The transition was fairly natural. In Hazbin Hotel, it's not just Adam he has voiced, but also the villain who eventually makes the viewers laugh, Sir Pentious. This is a testament to his vocal versatility and range.
Some more animation voice roles include sister series Helluva Boss, in which he voiced actors like Fizzarolli and Robo Fizz. Moreover, he also shared credits in another animated show, Dead End, on Netflix.
All of these experiences make him the best fit for the musical drama, while his dynamic range helped him play not just one but two characters simultaneously.