Steven Frederic Seagal (/ s ɪ ˈ ɡ ɑː l / sig-AHL; born April 10, 1952) is an American actor, producer, screenwriter, martial artist, and musician.A 7th-dan black belt in aikido, he began his adult life as a martial arts instructor in Japan [2] where he became the first American to teach in an aikido dojo. [3]He later moved to Los Angeles where he continued teaching aikido.