Critical Role Wiki

This wiki contains spoilers for all stories of Critical Role. This includes the story for unaired episodes of The Legend of Vox Machina, as it's based on the first campaign of Critical Role from 2015-2017.


Critical Role Wiki
Critical Role Wiki

Brennan Lee Mulligan is an actor and writer. He is a member of the CollegeHumor cast and a main cast member of Dimension 20, where he typically serves as Dungeon Master.

Critical Role Productions

Brennan is credited as Special Thanks in Explorer's Guide to Wildemount for playtesting the Hollow One supernatural gift with his character Deadeye on Not Another D&D Podcast, a year before it was published in the book.[1][2]

He played in "Elden Ring One-Shot: O Ye of Little Faith" (Sx65). The blue dice bag he used during the game (seen in the photograph above) was one he's owned since he was ten. It was nearby when he watched the Campaign One final fight, in "Vecna, the Ascended" (1x114), which aired before he ever considered playing D&D before a camera. He felt it meaningful to be able to bring the bag with him to a Critical Role table.[3]

Brennan is the DM for the Exandria Unlimited: Calamity series.

Player characters

Other work

Brennan is a member of the CollegeHumor cast and a main cast member Dimension 20, where he typically serves as Dungeon Master. At Dimension 20, he's served as Dungeon Master for games played by Matthew Mercer, Marisha Ray, Krystina Arielle, Carlos Luna, Aabria Iyengar, Amy Vorpahl, Erika Ishii, and Ally Beardsley. He has also played alongside Erika for game GMed by Aabria for Dimension 20 and alongside Mica Burton for a game DMed again by Aabria for Roll20.[4][5]

Brennan and Molly Ostertag co-created the webcomic Strong Female Protagonist published online since 2012. It has been on hiatus since 2018.


In November 2015, Brennan was a contestant on the American version of Who Wants to Be a Millionaire and won $50,000 (equivalent to about $61,000 in 2022, respectively).[6][7]


  1. Murphy, B. (DM). (2019, May 5). Deadeye (No. 60). [Audio podcast episode]. In Not Another D&D Podcast. Headgum.
  2. Twitter logo.png Brennan Lee Mulligan (@BrennanLM) on Twitter: "Hey Kyle! Thanks so much! Hollow One is a racial template Matt Mercer designed and will be featured in his upcoming book I believe! He used it for Leiland on the last season of Dimension 20, and was kind enough to loan it to me for use in NADDPOD with Murph's permission!" (2019-06-09).
  3. Twitter logo.png Brennan Lee Mulligan (@BrennanLM) on Twitter: "And, if I might be forgiven a dorky & sincere moment: This is my first and only bag of dice that I've had since I was 10 years old. The drawstrings went years ago, and it is threadbare and careworn. This was right by my side in Oct 2017 when like every other Critter I was going--" (2022-03-01). Continued in a second Tweet: "--absolutely feral watching the final battle of Campaign One, before I had ever even dreamed of playing D&D in front of a camera. I don't know how many years this faithful bag has left in him, but it meant & means the world to me that I got a chance to bring him to that table."
  4. See "Cast" at the Dimension 20 wiki.
  5. D&D Strixhaven Game | Brennan Lee Mulligan Aabria Iyengar Mica Burton Becca Scott Danny Quach at the official Roll20 YouTube.
  6. Brennan Mulligan on Who Wants To Be A Millionaire Wiki
  7. The Buccaneer Buddies Reunite (subscription required)


  1. Brennan Lee Mulligan on set for "Elden Ring One-Shot: O Ye of Little Faith" (Sx65), by Chris Lockey (source). This file is a copyrighted work. Its use in this article is asserted to qualify as fair use of the material under United States copyright law.