Brennan Lee Mulligan is the creator and producer of Dimension 20. While he usually acted as dungeon master, he was also a player in Misfits and Magic, A Court of Fey and Flowers, The Ravening War, Burrow's End, and On a Bus.
Games[]
Career[]
Brennan is a fulltime cast member and writer at Dropout (formerly CollegeHumor). He has made appearances in numerous shorts and sketches, most notably as various company CEOs, as well as Dropout originals such as Um, Actually and The Rank Room. Brennan is most notable for being the creator and DM of Dimension 20 and Dimension 20 sidequests. He also hosted the podcast Adventuring Academy which is about Dungeons and Dragons. He also briefly played a character named Deadeye Cybin in Brian Murphy and Emily Axford's Not Another D&D Podcast.
Brennan is also the writer of the webcomic Strong Female Protagonist. He is also a staff member at The Wayfinder Experience, a live-action roleplaying camp for kids and teens. Brennan also performs regularly at UCB theater.
Brennan is also a founding member of Worlds Beyond Number, a tabletop podcast alongside Erika Ishii, Aabria Iyengar and Lou Wilson, and is the DM for the podcast's first campaign; The Wizard, The Witch, And the Wild One.
Brennan has also GMed 3 mini campaigns for Critical Role (EXU Calamity, Downfall and EXU Divergence) , and has been announced as the GM for the upcoming main campaign (Campaign IV) starting in October, 2025.
Personal Life[]
Brennan Lee Mulligan met Isabella "Izzy" Roland while the two performed improv, and began dating in 2017. They became engaged on January 21, 2021, and married on April 1 (April Fool's Day), 2023. On January 23, 2024, he announced that the two of them had had a daughter whom they refer to under the pseudonym "Sunny" in order to protect her privacy.
Quotes[]
"We want any effort on our part to be the winning effort. We don't want to be a drop in the bucket, we want to be the entire ocean." ― Strong Female Protagonist: Book One
"Nobody in the whole world is normal. That's an idea made up by clothing companies to sell t-shirts. It doesn't exist in nature. Everybody gets to be weird in their own special way." ― Strong Female Protagonist: Book One
"It's not looting if it was your fucking money to start with!" ― SAG-AFTRA/WGA Strike 2023
"In the same way your heart feels and your mind thinks, you, mortal beings, are the instrument by which the universe cares. If you choose to care, then the universe cares. If you don't, then it doesn't." ― Fantasy High Ep. 17 - Prompocalypse Part 2
"I hate having my shit fucked." ― A Crown of Candy Ep. 4 - The Grand Tournament