Special Guest Stars
Lily Tomlin
voices Professor Fizzle
Nathan Fillion
voices Axle ValveStuck
Martin Short
voices Tony Tennelli
Jay Baruchel
voices Dr. Tillage
Catherine O'Hara
voices Aunt TennelliGuest Stars
Matthew Mintz
voices Ralphie
Miles Koseleci-Vieira
voices Arnold
Gabby Clarke
voices Dorothy Ann
Mikaela Blake
voices Keesha
Lynsey Pham
voices Wanda
Leke Maceda-Rustecki
voices Carlos
Kaden Stephen
voices TimCo Starring
Ana Sani
voices Additional Voices
Annelise Forbes
voices Additional Voices
Lilly Bartlam
voices Additional Voices
Stuart Stone
voices Additional Voices
Marcus Craig
voices Additional Voices
Martin Roach
voices Additional Voices
