Matt Harrigan has worked as a producer on several shows for Williams street and was the founder of the short-lived studio Williams Street studio. He is also an adult swim creative director. He created other adult swim shows such as Assy McGee and FishCenter Live. Matt Harrigan performs the voices of both Liquor & Buttermilk from 12 oz. Mouse.
Aside from 12 Oz. Mouse & other programs, He voiced Major Shake in Matt Maiellaro's other adult swim show Aqua Teen Hunger Force in two episodes called "Bad Replicant" and "The Last One" and he also voiced Linda from Aqua Teen Hunger Force Colon Movie Film For Theaters, the movie adaptation of Aqua Teen Hunger Force.
- Aside from the programs Assy McGee, FishCenter Live, 12 oz. Mouse and Aqua Teen Hunger Force, Matt Harrigan has also worked on Adult Swim shows such as Space Ghost Coast to Coast, Perfect Hair Forever, Tom Goes to the Mayor, Harvey Birdman, Attorney at Law, and Tim and Eric Awesome Show, Great Job!