Mark Griffin (born 1957), better known as MC 900 Ft. Jesus, is a classically trained musician turned rapper and experimental musician who was born in Kentucky. The son of an army officer, Griffin moved around quite a bit before settling in Dallas, Texas in 1979. Griffin studied the trumpet and has a BA in Music from Morehead State University as well as an advanced degree in music from North Texas State University. Before becoming MC 900 Ft. Jesus, Griffin played in local Dallas bands The Telefones and Lithium X-Mas.

MC 900 Ft. Jesus' music is influenced by hip-hop, incorporating many sound samples. His first album, Hell With the Lid Off included the single "Truth is Out of Style" which gained a cult following. His subsequent single, "The City Sleeps", explored the mind of a serial arsonist.

He released his last album, One Step Ahead of the Spider, in 1994; it contained the single "If I Only Had a Brain", which became his best-known song. The song gained increased exposure from the music video directed for it by Spike Jonze, as well as exposure on MTV's Beavis and Butt-Head cartoon show.