Robert William "Bob" Howard (born January 29, 1963) is an American semi-retired professional wrestler. He is best known for his 15-year career with the World Wrestling Federation/World Wrestling Entertainment (WWF/E) under the ring names Thurman "Sparky" Plugg, Bob "Spark Plug" Holly, Bombastic Bob and Hardcore Holly.After debuting in 1990, Holly worked for Smoky Mountain Wrestling and other independent promotions, before joining WWE full-time in 1994.