Born in Chicago, Illinois, Campbell began studying improvisational comedy at iO Theater at the age of fifteen, under the tutelage of Del Close.

[1] Campbell is an alumna of The Midnight Show, a monthly sketch showcase at the Upright Citizens Brigade Theater, and is a recurring performer on The CW's Whose Line Is It Anyway.

Campbell has also appeared in commercials for CiCi's Pizza, Wendy's, Toyota, and was featured in Activision's "Mapathy" campaign for the video game Call of Duty: Modern Warfare 2.

[citation needed] In addition, Campbell is also a video game journalist, and was editor of Dave Halverson's Play Magazine as well as Jeff Bond's Geek Monthly until their closure in 2010.

[citation needed] Formerly, Campbell was also the Executive Editor of Fusion Publishing's Rocket Magazine, in addition to being a freelance contributor for Edge Online, Action Button, and EGM.