Cast[]
- Master Frown as Horrid Henry (Both the main villains)
- Puppycorn as Perfect Peter (Both the main protagonists)
- Dr. Fox as Mum
- Richard as Dad
- Brock as Rude Ralph
- Unikitty as Clever Claire
- Friend Guy as Mischievous Mike
- Master Doom as Moody Margaret
- FeeBee as Prissy Polly
- Gizmo as Anxious Andrew
- Dino Dude as Goody-Goody Gordon
- Penny as Gorgeous Gurinder
- Kickflip as Lazy Linda
- Cupcake Monster as Pimply Paul