Chief Mulrooney is an guest character in Fuller House. He is the new chief at the Fire Station that Tommy Fuller Sr. used to work at. On July 13, of 1991, Wake up San Francisco was doing a segment on public servants with interesting hobbies, which he was accepted to go on as "The Singing Fireman". However, since Danny Tanner allowed "the breakdancing paramedic" do to two numbers, the show ran out of time and couldn't feature him. He had never forgiven Danny for this, and still held a grudge as shown in Secrets, Lies, & Firetrucks
He is portrayed by Patrick Gallagher.