Cast[]
- Diesel 10 as Horrid Henry (Diesel 10 and Horrid Henry are both villians)
- Thomas as Perfect Peter
- Edward as Brainy Brian
- Henry as Anxious Andrew
- Emily as Gorgeous Gurinder
- Rosie as Prizzy Polly
- D261 as Soggy Sid
- Annie/Clarabel as Rich Aunt Ruby
- Daisy as Moody Margaret
- Mavis as Sour Susan
- Spencer as Beefy Bert
- Boco as Aerobic Al
- Bill/Ben as Rude Ralph
- Trevor as Dizzy Dave
- Duck as Jolly Josh
- Dennis as Tough Toby
- Oliver as Kind Kasim
- James as Stuck Up Steve
- Derek as Tidy Ted