Guest Stars Bresha Webb voices Nibbles Maria Bamford voices Jill Timothy Simons voices Raccoon Maria Bamford voices Darla Nicole Byer voices Larrabee David Spade voices Himself Tom Kenny voices Diablo's Human Dad Kathleen Turner voices Nancy Phil LaMarr voices Guernico James Snyder voices Bernstein Maddie Corman voices Caravaggio Gabrielle Allan voices Mrs. Van Amburg Uncredited Lisa Kudrow voices Lady Capulet Will Forte voices Nathan