Brennan Lee Mulligan is an American comedian, actor, writer, and Dungeon Master. He is best known for creating and leading Dimension 20, a popular Dungeons & Dragons series on Dropout. Brennan is famous for his sharp improv skills, emotional storytelling, and ability to bring characters to life in exciting and creative ways. Fans love how he blends comedy, drama, and fantasy into every show he works on.
He grew up in New York City in a creative family. His mother, Elaine Lee, is an actress and writer, and his father, Joe Mulligan, is a comedian. From a young age, Brennan loved games and storytelling. He started playing Dungeons & Dragons at age 9 and was already running games as a Dungeon Master by 10. His early experiences in improvisation and live-action roleplay helped him develop the skills he uses today in his shows and podcasts.
Brennan’s career spans multiple platforms. He worked with CollegeHumor, co-created podcasts like Worlds Beyond Number, and collaborated with Critical Role. Over the years, he has built a strong fanbase thanks to his creativity, humor, and dedication. Outside of work, Brennan is a family man, married to Isabella “Izzy” Roland, with whom he has a daughter. His journey shows how passion, practice, and imagination can turn a love for games into a successful career.
Brennan Lee Mulligan Wiki/Bio
- Full Name: Brennan Lee Mulligan
- Date of Birth: January 4, 1988
- Age: 37 years (as of 2025)
- Profession: Comedian, Writer, Actor, Dungeon Master
- Known For: Dimension 20, Game Changer, Strong Female Protagonist, Worlds Beyond Number
- Hometown: New York City, USA
- Current Residence: Los Angeles, California, USA
- Nationality: American (of Irish descent)
- Zodiac Sign: Capricorn
- Instagram: @brennanleemulligan
Physical Details
- Height: 5’9” (175 cm)
- Build: Average/Athletic
- Hair Color: Brown
- Eye Color: Brown
- Appearance: Casual, approachable style often seen in T-shirts and jackets during shows and live streams
Brennan Lee Mulligan Early Life
Brennan Lee Mulligan was born in New York City into a creative family. His mother, Elaine Lee, is an actress and writer, and his father, Joe Mulligan, is a comedian. From a young age, he loved games, storytelling, and improv, which shaped his passion for tabletop RPGs like Dungeons & Dragons.
As a teen, Brennan joined The Wayfinder Experience, a live-action roleplay camp, where he later became head writer. He was homeschooled, giving him time to develop his creative skills while overcoming school challenges. By 17, he earned an associate degree in philosophy and humanities, laying the foundation for his career in writing and performance.
Brennan Lee Mulligan Education
- School: Homeschooled
- College: SUNY Ulster (Philosophy & Humanities, 2005)
- University: School of Visual Arts (BFA, Screenwriting, 2009)
- Other Training: Upright Citizens Brigade (Improv)
His formal education in philosophy, humanities, and screenwriting, combined with improv training at UCB, laid the strong groundwork for his career as a storyteller, comedian, and Dungeon Master.
Brennan Lee Mulligan Family Details
- Father: Joe Mulligan (Comedian)
- Mother: Elaine Lee (Actress & Writer)
- Spouse: Isabella “Izzy” Roland (Married in 2023)
- Children: Daughter “Sunny” (b. 2023)
- Marital Status: Married
Brennan grew up in a creative family, which inspired his love for storytelling, comedy, and games. He met his wife Izzy Roland at UCB in 2017, and they built a strong personal and creative partnership, welcoming their daughter Sunny in 2023.
Brennan Lee Mulligan Career Highlights
Brennan joined CollegeHumor in 2017, where his sketch “Tide CEO” went viral. He quickly became a key figure on Dropout, writing and starring in shows like Game Changer and Make Some Noise. In 2018, he launched Dimension 20, which redefined tabletop RPGs with high production, emotional storytelling, and engaging characters.
Outside Dropout, Brennan has collaborated with Critical Role, serving as Dungeon Master for campaigns like Exandria Unlimited: Calamity and Downfall. He also co-founded the top-ranking podcast Worlds Beyond Number with Erika Ishii, Lou Wilson, and Aabria Iyengar. His career blends improv, comedy, and TTRPG storytelling, making him a beloved figure in the nerd and gaming community.
Career Timeline
Improv Debut: Upright Citizens Brigade (UCB)
Sketch Comedy: Joined CollegeHumor in 2017; viral sketch “Tide CEO”
Major Series: Dimension 20 (Creator & Dungeon Master, 2018–present)
Other Shows: Game Changer, Make Some Noise, Very Important People
Notable Podcast: Worlds Beyond Number (Launched 2023)
Critical Role DM: Exandria Unlimited: Calamity (2022), Downfall (2024), Divergence (2025)
Awards: Webby Award (2019), NY Fringe Festival – Excellence in Performance
Brennan Lee Mulligan Net Worth and Income
- Estimated Net Worth: $1.5–2 million (as of 2025)
- Income Sources: Dropout shows, Patreon (Worlds Beyond Number), Cameo, Live Shows
Brennan earns through multiple platforms, including his Dropout salary, high-profile live tours like Hammersmith Apollo 2024, and a hugely successful Patreon podcast. These combined sources have helped him build a stable and growing income while pursuing his passion for storytelling and TTRPGs.
Brennan Lee Mulligan Recent Updates
2023
- Married Izzy Roland in April.
- Became a dad—announced daughter’s birth in January 2024.
- Co-founded Worlds Beyond Number, reaching top 20 on Patreon.
- Led a D&D-themed WGA strike protest called “AMPTiamat”.
2024
- DMed Critical Role: Downfall in July.
- Starred in Game Changer and Make Some Noise.
- Took Dimension 20 on a UK/Ireland tour.
2025
- DMed Exandria Unlimited: Divergence.
- Appeared in Game Changer episode “Fool’s Gold”, jokingly pretending to quit Dropout.
- Continued Dimension 20 and Worlds Beyond Number, with new live shows in the works.
conclusion
Brennan Lee Mulligan is a talented comedian, actor, writer, and Dungeon Master who has turned his love for games and storytelling into a successful career. From his early days in New York City, playing Dungeons & Dragons, to creating Dimension 20 and co-founding Worlds Beyond Number, he has built a strong connection with fans through humor, creativity, and heart. Brennan continues to explore new projects, live shows, and podcasts while balancing family life with his wife Izzy and daughter Sunny. His journey shows how passion, dedication, and imagination can make dreams real.
FAQs
1. Who is Brennan Lee Mulligan?
Brennan Lee Mulligan is a comedian, writer, actor, and Dungeon Master, best known for creating the show Dimension 20.
2. What shows is Brennan Lee Mulligan known for?
He is known for Dimension 20, Game Changer, Make Some Noise, Worlds Beyond Number, and collaborations with Critical Role.
3. What is Brennan Lee Mulligan’s educational background?
He was homeschooled, earned a Philosophy & Humanities degree at SUNY Ulster, and completed a BFA in Screenwriting at School of Visual Arts.
4. What is Brennan Lee Mulligan’s family life like?
Brennan is married to Isabella “Izzy” Roland, and they have a daughter named Sunny, born in 2023.
5. What is Brennan Lee Mulligan’s net worth and income sources?
His estimated net worth is $1.5–2 million, earned from Dropout shows, Patreon, live performances, and cameo appearances.
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