In the TV series, Henry and Peter’s Mum and Dad have shown to be neglectful, short-tempered, strict, and borderline unfair towards Henry while being controlling of him. They are shown to punish Henry all the time for his misbehaviour, even for things he didn't do. They rarely do this to Peter since he is a golden child in their eyes. This has presumably caused Henry to become the horrid boy he is. Despite punishing Henry all the time, they never do anything to figure out why he is so horrid in the first place, and rather influence his behaviour, even pretending that he isn't their son whenever they are in public, and often focus on his horrid behaviour and not his well-being. Whenever they punish Henry, they will usually ban or ground him from things like watching TV, pocket money, loud noise, sweets, hanging out with his friends, sleepovers, and the computer. In "Horrid Henry's Horrid Revenge", they take all the stuff out of his room because he caused Peter to spill paint on the floor. Mum in particular often shows favouritism towards Peter by hugging, kissing and coddling him, even calling him endearing pet names like 'sweetie pie', 'darling', 'sugar plum', 'bunny hop', "pumpkin," "poppet," and "Peterkins," but never calling Henry any of that, always holding him in contempt. In the episode "Happy Birthday Peter," she cheers and claps when Colin the Clown makes a magic trick for Henry to "disappear,” disgusting Moody Margaret and Rude Ralph. She also gets her husband in trouble in one episode. In "Horrid Henry's Fairy Dance,” she plans to publicly humiliate Henry after Peter takes pictures of him in a fairy costume. They are constantly in denial over their children, as they believe Henry always does the bad things and lies but never Peter, one instance would be in "Horrid Henry, Where's Fluffy?" when they demand Henry stop "accusing the neighbours" despite him telling the truth about what has really happened to Fluffy. While at first glance, it might be hard to qualify them as villains because they are meant to be strict and conforming parents who hate Henry's bad antics. This is especially the case in the books, and series 1 of the TV series, where Henry is a lot more horrid, so their treatment of him seems more justified. However, Henry’s horridness is toned down in later series of the show, so their treatment of him often seems less justified. In spite of that, Mum and Dad aren't really evil and do care for Henry on occasions, such as in "Horrid Henry and the Perfect Plant,” where Mum rushes to the living room (where Henry is sleeping) to make sure he is alright when he wakes up from a nightmare. Dad is also shown to get along with Henry a lot better in later seasons of the TV series. They are also shown to punish Peter on some occasions, even though it doesn’t excuse their behaviour a majority of the time.