Clever Clare in Peter's class

Clever Clare (furthest left) in Peter's class (Horrid Henry: Nothing But The Truth)

Clever Clare is thought to be the Smartest girl in Ashton Primary School. She's thought to be a tell-tale which was shown in Horrid Henry's New Teacher.  

In the books she has pigtails and shes in Perfect Peters Class. Her Arch Enemy is Brainy Brain! 

In Horrid Henry's Top 10 Things, she is seen skipping in the park when Henry was younger, implying she is much older than him in the show.