Gene Klein known professionally as Gene Simmons, is an Israeli-American musician, singer, songwriter, record producer, entrepreneur, actor, author and television personality.

Also known by his stage persona 'The Demon', he is the bassist and co-lead singer of 'Kiss', the rock band he co-founded with Paul Stanley in the early 1970s.

Simmons was born on August 25, 1949 at Rambam Hospital in Haifa, Israel to Jewish emigrants from Hungary. His mother, Florence Klein, was born in Hungary, and survived internment in Nazi concentration camps.

He has said that his family was "dirt poor," scraping by on rationed bread and milk. At age seven, he began to pick wild fruit and sell it on roadsides together with a friend.

He eventually immigrated to the United States with his mother and settled in New York City. His father remained in Israel, where he had one other son and three daughters.

Simmons lives in Los Angeles, California with his wife, Canadian former Playboy Playmate and actress Shannon Lee Tweed. Although they began dating in 1983, they did not marry until 28 years later.

Simmons often joked that he and Tweed were "happily unmarried" for over 20 years. He also often stated, "Marriage is an institution, and I don't want to live in an institution". Simmons and Tweed wed on October 1, 2011 at the Beverly Hills Hotel.

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