Brennan Lee Mulligan Biography: Age, Height, Parents, Siblings, Net Worth, Wife, Children
Brennan Lee Mulligan is an American comedian, writer, actor, producer, game master, and screenwriter best known for his work with Dropout (formerly CollegeHumor).
He is internationally recognized as the creator and longtime Game Master of Dimension 20, one of the world’s most popular actual-play tabletop role-playing series.
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Brennan Lee Mulligan is also known for Game Changer, Make Some Noise, Worlds Beyond Number, Critical Role, and the webcomic Strong Female Protagonist, making him one of the most influential figures in modern tabletop gaming and comedy.
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| Wiki Facts & About Data | |
| Name: | Brennan Lee Mulligan |
| Born: | January 4, 1988 (age 38 years old) |
| Place of Birth: | New York City, New York, United States |
| Nationality: | American |
| Ethnicity: | Irish-American |
| Height: | 6 feet 1 inch (185 cm) |
| Religion: | Christianity |
| Parents: | Joe Mulligan, Elaine Lee |
| Siblings: | Griffin Mulligan |
| Spouse: | Isabella “Izzy” Roland |
| Relationship: | Married |
| Children: | Two |
| Occupation: | Comedian, Writer, Actor, Producer, Game Master, Screenwriter |
| Net Worth: | $8 million |
Early Life and Education
Brennan Lee Mulligan was born on January 4, 1988, in New York City, New York, United States. Joe Mulligan, a comedian, and Elaine Lee, an actress and writer, raised him. His ethnicity is Irish-American, and his religion is Christianity.
He grew up alongside his brother, Griffin Mulligan. From an early age, he developed a passion for storytelling and tabletop role-playing games after his mother introduced him to Dungeons & Dragons.
He earned an Associate of Arts degree from SUNY Ulster, studying philosophy and humanities before pursuing a career in comedy and entertainment.
Career
Brennan Lee Mulligan began his professional career performing and teaching improvisational comedy at the Upright Citizens Brigade Theatre, where he refined his skills as a comedian and storyteller.
He later joined CollegeHumor, eventually becoming one of the platform’s leading writers, performers, and producers.
His breakthrough came in 2018 with the launch of Dimension 20, where he serves as creator, executive producer, and Game Master, helping redefine actual-play entertainment for a global audience.
Beyond Dimension 20, Mulligan has starred in Game Changer, Make Some Noise, Very Important People, and numerous Dropout productions.
He also serves as the Game Master for Worlds Beyond Number, has led acclaimed campaigns for Critical Role, and co-created the award-winning webcomic Strong Female Protagonist alongside Molly Ostertag.
His blend of improvisation, fantasy storytelling, and character-driven narratives has earned him widespread recognition as one of the most respected creators in tabletop gaming and digital entertainment.
Awards and Nominations
- Webby Award – Winner, Best Comedy (Tide CEO sketch) (2019)
- Autostraddle Comic and Sequential Art Award – Winner (Strong Female Protagonist)
- Excellence in Performance Award – New York International Fringe Festival
- Featured among the leading creators in tabletop role-playing entertainment.
Social Media
- Instagram Handle: @brennanleemulligan
- Facebook: Brennan Lee Mulligan
- X (Twitter): @BrennanLM
- Official Website: brennanleemulligan.com
Personal Life
Brennan Lee Mulligan, 38, is married to comedian and actress Isabella “Izzy” Roland. The couple became engaged in 2021 and married in April 2023. They have two children.
Brennan Lee Mulligan enjoys tabletop role-playing games, fantasy literature, improvisational comedy, writing, mythology, and live storytelling.
Standing at 6 feet 1 inch (185 cm), he continues to perform at live events and conventions while creating new projects for Dropout and other entertainment platforms.
Net Worth
Brennan Lee Mulligan has an estimated net worth of $8 million USD.
His income is generated from acting, comedy performances, writing, producing, streaming productions, live tours, podcasting, convention appearances, publishing, royalties, sponsorships, and other entertainment-related ventures.
His long-running success with Dimension 20, Dropout, Worlds Beyond Number, Critical Role, and numerous digital media projects has contributed significantly to his financial success.
Filmography
- Parlor Room (2025)
- Very Important People (2023–present)
- Worlds Beyond Number (2023–present)
- Critical Role: Exandria Unlimited (2022–present)
- Make Some Noise (2022–present)
- Game Changer (2019–present)
- Dimension 20 (2018–present)
- Um, Actually (2017–2020)
- Adam Ruins Everything (2017)
- CollegeHumor Originals (2017–2020)
What People Ask
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