- Darren Criss
- Harry
- Joey Richter
- Ron
- Joe Walker
- Voldemort
- Meredith Stepien
- Hermione
- Lauren Lopez
- Malfoy
- Jaime Lyn Beatty
- Ginny
- Dylan Saunders
- Dumbledore
- A.J. Holmes
- Gilderoy
- Tyler Brunsman
- McGonagall / Lucius / Cedric
- Brian Holden
- Hagrid / Basilisk / Lupin
- Christopher Sandberg
- Mad-Eye Moody / Barty Crouch Jr. / Moaning Myrtle / Tom Riddle Sr. (as Chris Allen)
- Brian Rosenthal
- Seamus / James / Quirrell
- Britney Coleman
- Dean / Bellatrix
- Corey Dorris
- Kingsley
- Jim Povolo
- Goyle
- Joe Moses
- Nearly Headless Nick / Snape
- Richard Campbell
- Neville
- Evanna Lynch
- Luna
- Devin Lytle
- Cho
- Sango Tajima
- Lavender
- Lily Marks
- Molly
- Nicholas Joseph Strauss-Matathia
- Fenrir / Sirius (as Nick Strauss)
- Jeff Blim
- Aragog
- Arielle Goldman
- Mary / Hannah / Lily
- Alle-Faye Monka
- Fleur / Albus (as Allie Faye Monka)
- Brant Cox
- Percy / Colin
- Denise Donovan
- Mrs. Cole
- Elona Finlay
- Spider / Madam Pomfrey
- Nico Ager
- Thoms
- Eric Kahn Gale
- Wizard Cop #1
- Pat Brady
- Candy Lady
- Nick Lang
- Arthur / Sorty / Scarfy
- Bob Joles
- Narrator
