Winslow Fegley as Timmy Failure

Ophelia Lovibond as Patty Failure

Wallace Shawn as Mr. Crocus

Craig Robinson as Mr. Jenkins

Kyle Bornheimer as Crispin

Ai-chan Carrier as Corrina Corrina

Chloe Coleman as Molly Moskins

Kei as Rollo Tookus

Caitlin Weierhauser as Flo

Santiago Veizaga as Gunnar

Ruby Matenko as Maxine Shellenberger

Nicole Anthony as Mrs. Novachek

Allie Dunbar as Vet Nurse

Brenda Matthews as Store Owner

Christopher Martinez as Gabe