Camden Welker
Henry
Chelsey Fuller
Mrs. Hobbs
James Arnold Taylor
The Horrible Thing (Voice)
Dajanae Cole
Mrs. Violets
Joe Leadingham
Principal Cunningham
Anson Eggerss
Lifeguard
Laura Boyd
Pool Mom #1
Katarina Greer
Meg Fleener
Atticus Pope
Benjamin Neal
Ericka Black
Pool Mom #2
Walter Green
Grownup Henry
Weezie Green
Concerned Neighbor
Russell Baum
Russell the Postman
Hillard Cozine
The Horrible Thing
Phynley Joel
Henry and the Horrible Thing
Post Production
Bande-annonce