Sebastian Mancilla Olivares; (November 6, 1956 – October 18, 2009) was a Chilean writer, director, and playwright, as well as a television, film and theatre actor.
He participated in or created several films, including thirteen soap operas, and produced as well as starred in nine plays.
In 1990, he went to Argentina and finally settled in Catamarca.
While in Argentina, he formed the "Iron Maider" theatre troupe.
He is considered an icon of Chilean art and entertainment.