Zach (full name Zachary Michael Cregger) was born on March 1, 1980 in Arlington, Virginia. He grew up with three brothers - Jake, Sam and Dean. When Zach was in high school, he was part of an improv comedy troupe called The Nation of Improv.
In 2004 he graduated from the School of Visual Arts in New York with a Bachelor of Fine Arts in Computer Art.
Zach's first on-screen role was in the police procedural Homicide: Life on the Street in 1998. He appears as Dean Stamper in the second episode of the seventh season, titled Brotherly Love.
After leaving the SVA, he produced Uncle Morty's Dub Shack, a series on ImaginAsian TV that dubbed over Asian movies of typically bad quality. Trevor also worked on the show as a writer, and Sam as a producer at the network itself.
Zach plays Cooper in the 2008 film College.
In 2009, he and Trevor wrote, directed and starred in the film Miss March.
- Despises the name 'The Whitest Kids U' Know'. According to an IFC interview, he wasn't around when the troupe decided on it.
- One of his favorite characters to play was the bigot in Season 3 sketch Instant Karma Bigot.
- Likes it when Timmy gets hurt while performing/shooting a sketch (for instance in Timmy Future).