Brennan Lee Mulligan
Next on a festival bill: New York Comedy Festival · New York, NY · 6–15 November 2026
Brennan Lee Mulligan, an actor, writer, producer and improviser, lives in Los Angeles and is a partner in Dropout, the comedy streaming service.
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Who is Brennan Lee Mulligan?
Brennan Lee Mulligan, an actor, writer, producer and improviser, lives in Los Angeles and is a partner in Dropout, the comedy streaming service. He is best known as the host, showrunner and executive producer of Dimension 20, Dropout's tabletop role-playing series, and he stars in Worlds Beyond Number, an actual-play podcast. On stage he improvises with his wife, Izzy Roland, in a live show called Bigger! with Brennan and Izzy, which builds improvised scenes out of odd stories from real life, and he is a regular improviser and producer on other Dropout shows such as Game Changer and Make Some Noise. In October 2025 he ran Critical Role's fourth campaign as its dungeon master. At the 2026 New York Comedy Festival he was the guest at a live taping of Vulture's interview podcast Good One. [1]
Where to see Brennan Lee Mulligan next
On stage and screen
- Known forDimension 20, Dropout's tabletop role-playing show, as host, showrunner and executive producer [1]
- Known forWorlds Beyond Number, an actual-play podcast [1]
- Known forBigger! with Brennan and Izzy, a live improv show with his wife Izzy Roland [1]
- Credit · 2025Critical Role's Campaign 4, as dungeon master [1]
- Credit · 2026Good One, Vulture's interview podcast: live taping at the New York Comedy Festival [1]
Festival history
- 2026New York Comedy Festival, New York, NY
Brennan Lee Mulligan: questions
What is Brennan Lee Mulligan known for?
Dimension 20, Dropout's tabletop role-playing show, as host, showrunner and executive producer.
Where can I see Brennan Lee Mulligan live?
At New York Comedy Festival in New York, NY, 6–15 November 2026.
Is Brennan Lee Mulligan stand-up?
No: Brennan Lee Mulligan is improv, comedy made up on the spot. No two shows are the same.
Where is Brennan Lee Mulligan from?
Brennan Lee Mulligan works from Los Angeles.