James Walter Castor (June 23, 1940[n1] – January 16, 2012) was an American funk, R&B and soul musician. He is credited with vocals, saxophone and composition. He is best known for songs such as "It's Just Begun", "The Bertha Butt Boogie", and his biggest hit single, the million-seller "Troglodyte (Cave Man)." Castor has been described as "one of the most sampled artists in music history" by the BBC.