Sara Paxton as Marnie Piper

Judith Hoag as Gwen Cromwell Piper

Lucas Grabeel as Ethan Dalloway

Joey Zimmerman as Dylan Piper Cromwell

Kristy Wu as Scarlett Sinister

Keone Young as Silas Sinister

Millicent Martin as Professor Periwinkle

Summer Bishil as Aneesa

Leslie Wing as Dr. Lwaxana Goodwyn

Debbie Reynolds as Agatha 'Aggie' Cromwell

Scott Stevensen as Dr. Grogg

Katie Cockrell as Sage Sinister

Kellie Cockrell as Saphire Sinister

Christopher Robin Miller as Young Troll

Micaela Nelligan as Wrinkled Old Witch

Brighton Hertford as Young Persimmon Periwinkle

Stefania Barr as Bratty Daughter

Eliza Wren as Geek Girl

Darren Ewing as Morose Cashier

Steve Luna as Jock

Chevy Lamont Cofield as Student

Robin De Santis as Fairy

Jason Fullmer as Student

Cheyenne Hall as Vampire

Aidan McKinney as Ice Cream Parlor Patron

Christopher McKinney as Dog Man

Denali McKinney as Pixie

Maggie Munro as Student

Austin Richey as Bat Boy with Scooter

Tisha Vaculin as Cheerleader #1

Sheila Hunter as Duck Lady