Web Reference: William Theodore Katt (born February 16, 1951) is an American actor and musician. He is best known for his starring role as Ralph Hinkley/Hanley on the ABC television series The Greatest American Hero (1981–1983). Jan 26, 2026 · Who is William Katt? American actor, comedian and musician William Theodore Katt was born in Los Angeles, California USA, on 16 February 1951, meaning that his zodiac sign’s Aquarius. Jan 5, 2024 · William Theodore Katt (born February 16, 1951) is an American film and television actor, voice artist and musician best known as the star of the television series The Greatest American Hero.
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