Randolph Severn "Trey" Parker III (born October 19, 1969) is an American actor, animator, screenwriter, director, producer, comedian, and singer. He is best known for being the co-creator of South Park along with his creative partner and best friend Matt Stone, as well as co-writing and co-directing the 2011 musical The Book of Mormon. Parker grew up in Conifer, Colorado and was interested in film and music growing up. He attended the University of Colorado, Boulder following high school, where he met Stone. The two collaborated on various short films, and starred in a feature-length musical, titled Cannibal! The Musical, in 1993.