Gene Simmons (born Chaim Witz August 25, 1949) is an Israeli-American musician, singer and songwriter. Also known by his stage persona The Demon, he is the bassist and co-lead singer of Kiss in the early 1970s.

Kiss is an American rock band formed in New York City in January 1973 by Paul Stanley, Gene Simmons, Ace Frehley, and Peter Criss. Well known for its members' face paint and stage outfits, the group rose to prominence in the mid–late 1970s with its shocking live performances, which featured fire breathing, blood-spitting, smoking guitars, shooting rockets, levitating drum kits, and pyrotechnics.

The band has gone through several lineup changes, with Stanley and Simmons being the only members to feature in every lineup. The original and best-known lineup consists of Stanley (vocals and rhythm guitar), Simmons (vocals and bass), Frehley (lead guitar and vocals), and Criss (drums and vocals).

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