Michael Madsen, famed for his roles in Tarantino’s films, has died at 67. Hollywood stars remember him as a poetic rebel, a legend, and a one-of-a-kind presence.

The "Reservoir Dogs" and "Kill Bill" actor was found unresponsive Thursday morning at his home in Malibu, California, and is believed to have died of cardiac arrest, his publicist told ABC News.

Actor Michael Madsen, a stoic actor who worked with Quentin Tarantino among other directors in various acclaimed films from the 1980s onward, has died, according to his publicist Liz Rodriguez. He was 67.