Guest Stars Leslie David Baker as Stanley Hudson Phyllis Smith as Phyllis Lapin-Vance Brian Baumgartner as Kevin Malone Angela Kinsey as Angela Martin Oscar Nuñez as Oscar Martinez Kate Flannery as Meredith Palmer Mindy Kaling as Kelly Kapoor Paul Lieberstein as Toby Flenderson Co Starring Creed Bratton as Creed Bratton Hugh Dane as Hank Devon Abner as Devon White Alec Zbornak as Bumble Bee Trick or Treater George Gaus as Lion Trick or Treater Annabelle Kopack as Fairy Princess Trick or Treater Ava Nisbet as Lion Trick or Treater Uncredited Lisa Malone voices Sherry