Born in Charleston, South Carolina, Jonathan Mangum began performing at various improv clubs in Florida, but it wasn't until he landed at SAK Theatre in Orlando, where he befriended fellow comedian Wayne Brady, that things turned around. Mangum, Brady and the SAK troupe performed to sold out shows thirteen times a week. After four years, Mangum and eventually the rest of the SAK troupe moved to L.A. where they performed as the much lauded, Houseful of Honkeys. Mangum continued to sharpen his skills performing with improv troupes Comedy Sportz, TheatreSports, Wayne Brady and Friends, and the Drew Carey All-Stars.