Theo Stevenson character Horrid Henry
Anjelica Huston character Miss Battleaxe
Parminder Nagra character Miss Lovely
Richard E. Grant character Vic Van Wrinkle
Mathew Horne character Dad
Noel Fielding character Ed Banger
Prunella Scales character Great Aunt Greta
David Schneider character Soggy Sid
Jo Brand character Demon Dinner Lady
Siobhan Hayes character Mum
Helen Lederer character Rich Aunt Ruby
Rebecca Front character Miss Oddbod
Kimberley Walsh character Prissy Polly
Scarlett Stitt character Moody Margaret
Ross Marron character Perfect Peter
Lloyd Howells character Rude Ralph
Jack Sanders character Aerobic Al
Reuben Lee character Brainy Brian
Billy Kennedy character Weeping William
Helena Barlow character Sour Susan
Nikita Mistry character Gorgeous Gurinda
Frank Kauer character Spotless Sam
Joshua-James Thomas character Goody Goody Gordon
Tyger Drew-Honey character Stuck-Up Steve
Tamsin Heatley character Madam Tutu/Fang (voice)
Dominic Wood character 2C4S Presenter 1
Richard McCourt character 2C4S Presenter 2
Zac Gabriel Werb character Tidy Ted
Keely Cat Wells character Alice
