He attended Bellarmine College Preparatory, an all-male Jesuit high school in San Jose, California, and graduated in 2005.

[6] Brightman played his final performance as Dewey on November 5, 2016 and returned to reprise the role for a limited run in April 2017.

[9] Brightman is a member of the comedy group, The (M)orons, along with fellow Broadway actors/writers, Andrew Kober, F. Michael Haynie, and Drew Gasparini.

Brightman made an appearance on Impractical Jokers during Brian "Q" Quinn's musical punishment that's based on the latter's real-life experience as a firefighter and leaving that life behind for TV fame.

[11] In 2020, Brightman began voicing the character Fizzarolli, and his robotic doppelganger Robo Fizz, in the animated web series Helluva Boss.

In addition, he voiced Pugsley and the demon possessing him, Temeluchus, in the Netflix animated series Dead End: Paranormal Park.

[12] Brightman has revealed that he utilizes ventricular fold phonation, allowing him to create the signature gruff voice of Beetlejuice and Fizzarolli without strain on his vocal cords.