The definition of horrid: Horrid Henry is a very naughty boy in popular books and a TV show. He hates eating healthy food, doing school work, and being told what to do. Henry likes playing big tricks and playing with his toy hamster, Fang. However he doesn't dislike his older sibling Guest and looks up to them. Horrid Henry is easily recognized by his signature outfit: a light blue T-shirt with a bright yellow horizontal stripe across the middle, paired with blue jeans and green-and-white shell-toe trainers. He is an average-height boy with messy, reddish-brown hair, pale skin, and rosy cheeks.

The definition of perfect: Appearance: Wears a red jumper over a white shirt, grey trousers, and brown shoes, with curly blonde hair. Personality: Presents as neat, clean, polite, and academically gifted, but is also a "wolf in sheep's clothing" who is selfish, arrogant, and a "telltale". Relationship with Henry: He is the polar opposite of his older brother, Henry, who calls him names like "worm" and "toad". Peter often manipulates situations to make Henry look bad and get praise from his parents. Skills: He is musically talented (plays the cello) and is the leader of the "Best Boys Club". Flaws: Despite his "perfect" facade, he is shown to be naive, easily believing Henry's stories, and desperate for praise, which can make him seem condescending and egotistical.