The comedic star died on May 15 of natural causes, a rep for the actor confirmed to PEOPLE. He was 86.
"My father passed away very peacefully last night at the fantastic age of 86 years old. He kept moving, working and making us happy until the very end," his daughter Hope Mulbarger told PEOPLE in a statement. "We loved him so very much!"
Born in Ohio, the four-time Emmy nominee — whose numerous credits include Best in Show, This Is Spinal Tap, Everybody Loves Raymond and Modern Family — began his career in sketch comedy, and transitioned to films and TV in the 1970’s.
The actor was also passionate about his work with Big Brothers/Big Sisters, City of Hope, and Actors and Others for Animals.