Kelly Ferguson
Liz LeRue
Grand Guignol
Berna Vincent
Cassie Zhen
Curtis Critter
Jacob Zellman
Peggy Drood
Victor Colleti
Ms. Zellman
Tommy
Alexa Ferguson
Pete Ferguson
Deanna
Jesper Huang
Veronica Preston
Young Kelly
Zellman's Secretary
Mr. Reynolds
Babysitter from Japan
Babysitter from Argentina (as José Giménez-Zapiola)
Babysitter from India
Toadies
Student
Sophomore Girl (as Eliza Josephine Faria)
Senior #1
Senior #2
Vice Principal
Party Kid
Snaggle (voice)
Jimmy (voice)
Roscoe (voice)
Kevin
Trick or Treater
Office Employee (uncredited)
Birthday Cake girl (uncredited)