Piers Polkiss was a Muggle and Dudley Dursley's best friend. Despite being scrawny with a face like a rat, he was a member of Dudley Dursley's gang and was usually the one who held people's arms behind their backs so Dudley could hit them. Piers did not like Harry Potter, because Dudley did not, and he always followed Dudley's lead. Piers would also join Dudley at Smeltings Academy.