Mulligan is married to Izzy Roland, a fellow comedian. The two got engaged in January 2021, as they reportedly announced on Instagram, and tied the knot in April 2023. They had been dating since 2017.

Mashable spoke with Dimension 20 creator and Game Master Brennan Lee Mulligan about what steampunk ... Mulligan said. "Who are the people that have this long-standing adventurer relationship, ...

Dropout’s Brennan Lee Mulligan and Izzy Roland have a new improv special out — we spoke to the Dimension 20 stars about it and much more.

Brennan Lee Mulligan leads a quartet of 'righteous wrestlers' in the Dimension 20 WWE crossover season Titan Takedown.

Brennan Lee Mulligan talks the ‘freedom and joy’ of Never Stop Blowing Up. And what’s next for Dimension 20’s latest series, ... That’s the relationship that me and Rekha have.