Series 3 is the third series of Horrid Henry.
- Episodes are now in HD
- There is a big difference in the animation
- There are newer characters like Vicious Vicky and Wheely Walter.
- There are some episodes that relate to other episodes (eg. Characters’ point of view) such as Horrid Henry and the Special Spa Day relating to Perfect Peter’s Perfect Day, Horrid Henry and the Movie Star relating to Horrid Henry's Perfect Protest And Horrid Henry and the Fashion Show relating to Moody Margaret, Superstar