Walsh, whose full name was Michael Emmet Walsh, appeared in over 119 feature films and more than 250 television productions. His versatile talent and impressive presence earned him roles in various genres and made him a valued character actor. Ridley Scott cast him as a hardened policeman alongside Harrison Ford in "Blade Runner" in 1982. In "Blood Simple", the directorial debut of the Coen Brothers from 1984, he played a ruthless private detective and won a Spirit Award Trophy for Best Actor. Walsh's film debut took place in 1969 in "Alice's Restaurant", and he starred alongside big names like Dustin Hoffman, Ryan O'Neal, Barbra Streisand, Steve Martin, and Robert Redford.
Colleagues and contemporaries such as Rob Schneider and director Edgar Wright have taken to social media to express their grief and appreciation for Walsh. They remember his great stories, his generosity, and the acting knowledge he accumulated in his long career. Walsh is survived by his niece Meagan Walsh, his nephew Kevin Walsh, and his great-nephews Emmet and Elliot.