
Brennan Lee Mulligan
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Brennan Lee Mulligan is an actor and writer known for Dimension 20, College Humor, and Strong Female Protagonist.
Known for
Credits

D(e)ad (2025)
as Owen from Science Care

The Candlenights 2021 Special (2021)
as Self

Bev (2016)
as Bev

Crown Prince (2017)
as Bartender

Dimension 20 Live: Gauntlet at the Garden (2025)
as Game Master

Critical Role Live: Oaths & Ash (2025)
as Self

Muppet Treasure Scriptland (2026)
as Long John Silver

Bigger! With Brennan and Izzy (2024)
as Self

Dimension 20 Live: Quangle Quest (2025)
as Game Master

Dimension 20 Live: Viva Más Vegas (2026)
as Game Master

Dimension 20 Live: Battle at the Bowl (2025)
as Game Master

Dimension 20: Misfits and Magic Holiday Special (2021)
as Evan Kelmp

The Legendary Rick Perry and the Art of Dimension 20 (2023)
as Self

Fallen For You (2017)
as Todd

Katie and Erika Throw The Perfect (Valentine’s Day) Party (2025)
as Self

Chris Grace: As Scarlett Johansson (2024)
as Brennan Lee Mulligan

The Roll of a Lifetime: How Dimension 20 Sold Out Madison Square Garden (2025)
as Self - Creator of Dimension 20 / Game Master / Dungeon Master

Exandria Unlimited: Calamity (2022)
as Game Master

Nancy (2016)
Actor

Restroom (2019)
Actor

Wealwell's Guide to Reposed Standing (2026)
as Wealwell Gotch (voice)





