Alex Brightman

Alexander Michael Brightman is an American actor, musician and writer.

He provides the voice of Sir Pentious and Adam in the Hazbin Hotel series, as well as for VoxTek's infomercials. He also voices Fizzarolli and Robo Fizz in Helluva Boss.

Background
He is known for his role as the titular character in Beetlejuice on Broadway as well as Pugsley and Temeluchus from the Netflix animated series, Dead End: Paranormal Park.

Trivia

 * He has a pet dog named Kevin.
 * According to Vivienne Medrano, Alex does a very unique voice for Sir Pentious, leading some of the team to not know it was him at first.
 * The "Stick it to the man" line on Adam's notes in "Welcome to Heaven" is a reference to the song of the same name from the musical, School of Rock, of which Alex Brightman, Adam's voice actor, originated the role of Dewey Finn.