• Diesel 10 as Horrid Henry
  • Percy as Perfect Peter
  • Lady Hatt as Mum
  • Sir Topham Hatt as Dad
  • Smudger as Fang the Hamster
  • Harold as Fluffy the Cat
  • Diesel as Mutant Max
  • Splatter as Rude Ralph
  • Dodge as Mischievous Mike
  • Elizabeth as Moody Margaret
  • Isabel as Margaret's Mum
  • James as Margaret's Dad
  • Isobella as Sour Susan
  • Hiro as Brainy Brian
  • Gordon as Anxious Andrew
  • Rosie as Gorgeous Gurinder
  • Madge as Lazy Linda
  • Olivia (A made-up Character) as Singing Soraya
  • Mavis as Prizzy Polly
  • Dennis as Pimply Paul
  • Hank as Beefy Bert
  • Billy as Goody-Goody Gordon
  • Thomas as Tidy Ted
  • Stepney as Spotless Sam
  • Ferdinand as Aerobic Al
  • Oliver as Jolly Josh
  • Hector as Greedy Graham
  • Mallard as Slimy Sammy
  • Daisy as Miss Battle-Axe
  • Henrietta as Mrs Battle-Axe
  • BoCo as Mr. Mossy
  • Molly as Miss Lovely
  • The Refreshment Lady as Miss OddBod
  • The Angry Policeman as Soggy Sid
  • Duncan as Stuck-Up Steve
  • George as Bossy Bill
  • Lord Harry as Big Boss
  • Spamcan as Mr Nerdon
  • The Troublesome Trucks as The Killer Boy Rats
  • Arry and Bert as The Brickhouse Boys
  • Charlie as Peter's Angel
  • Scruffey as Peter's Devil
  • The Stationmaster's Wife as Rabid Rebecca

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