Guest Stars Phylicia Rashad as Winnifred "Winnie" Guster Keith David as William "Bill" Guster Don McManus as Carl Wilcox Faune Chambers as Josephine "Joy" Guster Cassandra Sawtell as Brittany Wilcox Co Starring Liam James as Young Shawn Jill Morrison as Office Manager Noel Johansen as Theodore "Ted" Meltregger Brian Calvert as Parent Nels Lennarson as Moncrief Johnson Jesse Haddock as Helper Elf Sean Bell as Martial Arts Expert Matteo Mazziotti as Kid Ted Kozma as Frank Kelly Sarmiento as Parent #2