• George as Horrid Henry
  • Duck as Perfect Peter
  • Jem Cole as Henry's Dad
  • The Refreshment Lady as Henry's Mom
  • Sidney as Fang the Hamster
  • Max as Rude Ralph
  • Monty as Mischievous Mike
  • Diesel as Muntant Max
  • Mavis as Moody Margaret
  • Daisy as Sour Susan
  • Green Arrow as Brainy Brian
  • Flying Scotsman as Anixous Andrew
  • Isobella as Miss Battle-Axe
  • The Big City Engine as Mr. Mossy
  • Mallard as Stuck-Up Steve
  • Derek as Beefy Bert
  • Oliver as Goody-Goody Gordon
  • Thomas as Tidy Ted
  • Percy as Spotless Sam
  • D261 as Slimmy Sammy
  • Spencer as Bossy Bill
  • Bulgy as Mr. Nerdon
  • Diesel 10 as Greedy Graham
  • Culdee as Peter's Angel
  • Godred as Peter's Devil
  • Lord Harry as Pimply Paul
  • Emily as Prissy Polly
  • Rosie as Lazy Linda

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