Brennan Lee Mulligan

At-a-Glance

Creator and regular gamemaster for Dropout's actual play series Dimension 20.
Gamemaster for the first four seasons of Worlds Beyond Number and the fourth campaign of Critical Role.
Co-creator of the webcomic Strong Female Protagonist, named one of io9's Best New and Short Webcomics of 2012 and winning an Autostraddle Comic and Sequential Art Award in 2015.
Writer, performer, and producer for Dropout (formerly CollegeHumor) since 2017, with a new three-year development deal reported in 2025.
Co-founded Bootleg Adventures at age 15, organizing one-day live-action role-playing games.
Graduated from SUNY Ulster with an associate degree in philosophy and humanities (2005) and from the School of Visual Arts with a BFA in screenwriting (2009).

Biography

Brennan Lee Mulligan is an American comedian, actor, writer, and gamemaster. He frequently collaborates with Dropout (formerly CollegeHumor) as a writer, performer, and producer. Mulligan is recognized as the creator and regular gamemaster for Dropout's actual play series Dimension 20. He also serves as the dungeon master for the first four seasons of the creator-owned actual play podcast Worlds Beyond Number and the fourth campaign of the actual play web series Critical Role.