 Other recurring cast members include Adam West as the eponymous Mayor Adam West ; Jennifer Tilly as Bonnie Swanson ; John G. Brennan as Mort Goldman and Horace the bartender ; Carlos Alazraqui as Jonathan Weed ; Adam Carolla and Norm Macdonald as Death ; Lori Alan as Diane Simmons ; and Phil LaMarr as Ollie Williams and the judge . Fellow cartoonist Butch Hartman has made guest voice appearances in many episodes as various characters . Also , writer Danny Smith voices various recurring characters , such as Ernie the Giant Chicken . Alex Breckenridge also appears as many various characters . 
