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.
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.
Brennan is the DM for the Exandria Unlimited: Calamity series.
- Brigidda, hero ("Elden Ring One-Shot: O Ye of Little Faith" (Sx65))
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.
Brennan and Molly Ostertag co-created the webcomic Strong Female Protagonist published online since 2012. It has been on hiatus since 2018.
- Murphy, B. (DM). (2019, May 5). Deadeye (No. 60). [Audio podcast episode]. In Not Another D&D Podcast. Headgum. https://headgum.com/not-another-dd-podcast/ep-60-deadeye-the-shadowfell-saga-with-brennan-lee-mulligan
- 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." Continued in
- See "Cast" at the Dimension 20 wiki.
- D&D Strixhaven Game | Brennan Lee Mulligan Aabria Iyengar Mica Burton Becca Scott Danny Quach at the official Roll20 YouTube.
- Brennan Mulligan on Who Wants To Be A Millionaire Wiki
- The Buccaneer Buddies Reunite (subscription required)