M ichael Madsen is dead at the age of 67 from cardiac arrest, IndieWire has confirmed. He was found unresponsive July 3 in his Malibu home. The prolific character actor was best known for his decades-spanning collaborations with Quentin Tarantino, appearing in the director’s “Reservoir Dogs,” “Kill Bill,” and “Once Upon a Time in Hollywood.”

Michael Madsen, a tough guy character actor and frequent Quentin Tarantino collaborator, has died at the age of 67.

A prolific actor who appeared in more than 300 movies and TV shows, he brought a chilling intensity to Quentin Tarantino’s “Reservoir Dogs” and “Kill Bill.”