Cast[]
- Diesel as Horrid Henry
- Thomas as Perfect Peter
- Molly as Henry's Mom
- Edward as Henry's Dad
- Mouse as Fang
- S. C. Ruffey as Mr. Kill
- Gremlin as Bunny
- The Fat Controller's Cat as Fluffy
- Splatter as Rude Ralph
- Dodge as Mischievous Mike
- Daisy as Moody Margaret
- Old Slow Coach as Margaret's Mom
- Gordon as Margaret's Dad
- Mavis as Sour Susan
- James as Brainy Brian
- Stanley as Anxious Andrew
- Ashima as Gorgeous Gurinder
- Nia as Singing Soraya
- Rosie as Lazy Linda
- Lady as Prissy Polly
- Toby as Pimply Paul
- Ester as Vomiting Vera
- Arthur as Jolly Josh
- Murdoch as Beefy Bert
- Percy as Goody-Goody Gordon
- Duck as Tidy Ted
- Oliver as Spotless Sam
- Henry as Aerobic Al
- Billy as Weepy William
- Stepney as Greedy Graham
- Bulgy as Slimmy Sammy
- Elizabeth as Miss Battle-Axe
- Caroline as Mrs Battle-Axe
- Emily as Miss Lovely
- Hank as Mr. Mossy
- Belle as Mrs. Mossy
- Dowager Hatt as Miss Oddbod
- Duncan as Stuck-Up Steve
- Rebecca as Rich Aunt Ruby
- Toad as Bossy Bill
- Lady Hatt as Captain Crunch
- The Fat Controller as Soggy Sid
- Madge as Earnest Ella
- Spencer as Big Bob
- Hector as Mr. Nerdon
- Donald and Douglas as The Brickhouse Boys
- Whiff as New Nick
- Tamika as Lisping Lily
- Cranky as Razor Ron
- Flora as Great Aunt Greta
- Hiro as Doddery Donald
- Bertie as Peter's Angel
- Norman as Peter's Devil
- The Stationmaster's Wife as Rabid Rebecca
- Diesel 10 as Mutant Max
- Victor as Santa
- D261 as Tough Toby
- Sidney as Dizzy Dave
- Millie as Clever Clare
Episodes[]
- Horrid Diesel Tricks and Treats
- Horrid Diesel's Hobby
- Horrid Diesel's Hike
- Horrid Diesel and the Bogey Babysitter
- Moody Daisy Moves In
- Horrid Diesel's Sports
- Horrid Diesel's School Fair
- Horrid Diesel and the Demon Dinner Lady
- Horrid Diesel Eats Out
- Horrid Diesel Goes Swimming
- Horrid Diesel's Time Machine
- Horrid Diesel's Sick Day
- Horrid Diesel's Birthday
- Horrid Diesel and the Tooth Fairy
- Horrid Diesel Goes to Work
- Horrid Diesel and the Dinner Guests
- Horrid Diesel's Horrid Revenge
- Horrid Diesel's Wedding
- Horrid Diesel Reads a Book
- Horrid Diesel's Dance Class
- Horrid Diesel and the New Teacher
- Perfect Thomas's Horrid Day
- Horrid Diesel's Holiday
- Horrid Diesel Makes Some Money
- Happy Birthday Thomas!
- Horrid Diesel Goes Fishing
- Horrid Diesel's Hiccups
- Horrid Diesel's Diary
- Horrid Diesel's Horrid Mouse
- Horrid Diesel and the Day of the Dinosaur
- Horrid Diesel's Haunted House
- Horrid Diesel's Time Capsule
- Horrid Diesel Runs Away
- Horrid Diesel's Christmas
Horrid Diesel[]
- Horrid Diesel's Perfect Day
- Horrid Diesel's Dance Class
- Horrid Diesel and Moody Daisy
- Horrid Diesel's Holiday
Horrid Diesel and the Secret Club[]
- Horrid Diesel's Injection
- Horrid Diesel and the Secret Club
- Perfect Thomas' Horrid Day
Horrid Diesel Tricks the Tooth Fairy[]
- Horrid Diesel Tricks the Tooth Fairy
- Moody Daisy Moves In
Horrid Diesel's Nits[]
- Horrid Diesel's Nits
- Horrid Diesel and the Fangmangler
Horrid Henry Gets Quick Rich[]
- Horrid Diesel's Sports Day
- Horrid Diesel Gets Quick Rich
Horrid Diesel's Haunted House[]
- Horrid Diesel and the Comfy Black Chair
- Horrid Diesel's Haunted House
- Horrid Diesel Mind his Manners
Horrid Diesel and the Mummy's Curse[]
- Horrid Diesel's Hobby
- Horrid Diesel's Homework
- Horrid Diesel's Swimming Lesson
- Horrid Diesel and the Mummy's Curse
Horrid Diesel's Revenge[]
- Horrid Diesel's Revenge
- Horrid Diesel's Computer
- Horrid Henry Goes to Work
- Horrid Diesel and the Demon Dinner Lady
Horrid Diesel and the Bogey Babysitter[]
- Horrid Diesel Tricks and Treats
- Horrid Diesel and the Bogey Babysitter
- Horrid Diesel's Raid
- Horrid Diesel's Car Journey
Horrid Diesel's Stinkbomb[]
- Horrid Diesel Reads a Book
- Horrid Diesel's Stinkbomb
- Horrid Diesel's School Project
- Horrid Henry's Sleepover
Horrid Diesel's Underpants[]
- Horrid Diesel Eats a Vegetable
- Horrid Diesel's Underpants
- Horrid Diesel's Thank You Letter
Horrid Diesel and the Mega Mean Time Machine[]
- Horrid Diesel and the Mega Mean Time Machine
Horrid Diesel and the Football Fiend[]
- Horrid Diesel and the Football Fiend
- Horrid Diesel Goes Shopping
Horrid Diesel Robs the Bank[]
- Horrid Diesel's Newspaper
- Perfect Thomas' Pirate Party
Horrid Diesel Wakes the Dead[]
- Horrid Diesel and the TV Remote
Horrid Diesel and the Zombie Vampire[]
- Horrid Diesel Writes a Story
- Horrid Diesel and the Mad Professer
- Horrid Diesel and the Nudie Foodie
- Horrid Diesel and the Zombie Vampire
Horrid Diesel's Monster Movie[]
- Horrid Diesel's Monster Movie
Horrid Diesel's Nightmare[]
- Horrid Diesel's Mother's Day
Horrid Diesel's Cannibal Curse[]
- Horrid Diesel Bakes Off
- Horrid Diesel's Bad Book