Kyle Gass is an American musician, actor, and songwriter, best known as one half of the comedy rock duo Tenacious D, alongside Jack Black. Born on July 14, 1970, in Walnut Creek, California, Gass has contributed to the band's unique blend of humor and rock music since its formation in the late 1990s. In addition to his work with Tenacious D, Gass has appeared in various films and television shows, showcasing his versatility as a performer. He is also involved in theater and has collaborated with other artists, further establishing his presence in the entertainment industry.