The Brennan Lee Mulligan Shirt: A Rock & Roll Story
Instantly recognizable to fans of Dimension 20, the Brennan Lee Mulligan shirt has become a popular item for followers of the famed Dungeon Master. This vibrant red tee is more than just fan apparel it’s a genuine piece of rock and roll history that connects two passionate fandoms across different eras.

This red t-shirt features a faithful reproduction of a vintage 1960s concert poster for the legendary rock band The Doors. The classic psychedelic artwork includes the band’s iconic logo and text advertising a show at the famous Cow Palace, alongside supporting acts Lonnie Mack and Elvin Bishop. It’s a striking and authentic tribute to the golden age of rock.
The shirt’s recent fame comes from being worn by Brennan Lee Mulligan, the celebrated Dungeon Master, making it a must-have for his fans. However, its true origin is a poster from a 1969 Doors concert in California. The design is a genuine artifact of the 1960s psychedelic art movement, representing a legendary moment in music history that has now found a new life within the tabletop gaming community.
This shirt uniquely bridges the gap between classic rock and modern geek culture. It’s the perfect find for fans of The Doors, Brennan Lee Mulligan, or anyone who appreciates the fascinating journey of a great design. It serves as a tribute to legendary artists, both on the stage and at the gaming table.