Harvey Walden IV
Harvey Walden IV (born December 21, 1966) is a former United States Marine drill instructor, author, actor and television host. Military career. Walden was born in Chicago, Illinois and joined the U.S. Marine Corps at age 17. He served as a Drill Instructor at MCRD, Parris Island, South Carolina and retired from active duty in Sept 2007 at the rank of First Sergeant. Post-active duty. Walden is best known in the UK and US for his role as the expert fitness instructor on VH1's and ITV's prime-time shows "Fat Club" and "Celebrity Fit  Club". In the 2007 season of "Fit Club", during a heated exchange, contestant Dustin Diamond (the actor commonly known as Screech from Saved by the Bell) challenged Walden to "physical combat". Walden responded to the challenge after Dustin refused to follow their diet and exercise plans. He is a father of two children; one boy, Harvey V, and one girl, Tiyauna Denise.