The 88-year-old actor was, of course, most famous for playing Batman, but he also was well-known for lending his voice to another role — that of the Quahog Mayor Adam West on MacFarlane’s animated Fox sitcom.
“Family Guy has lost its mayor, and I have lost a friend,” MacFarlane said in a statement on Twitter. “Adam West was a joy to rk with, and the kind of guy you always wanted to be around. His positivity, good nature, and sense of fun were undeniable, and it was always a big jolt of the best kind of energy when he walked in to record the show. He knew comedy, and he knew humanity.
“I am beyond fortunate to have had the privilege of working with him, and he will be profoundly missed by all of us. Thank you from the bottom of my heart for all that you have given, Mr. Mayor. You’re irreplaceable.”
West played the delusional, unscrupulous mayor in more than 100 episodes of Family Guy, with the most recent installment airing last month. West also voiced another character that was a distorted version of himself in a 1997 episode of the animated Cartoon Network series Johnny Bravo that MacFarlane wrote. MacFarlane was then inspired to bring West into the Family Guy fold.
This article originally appeared on Ew.com