Peg Amy was Trot's wooden doll, who was stolen by Ruggedo to be his only subject. Ruggedo was cruel to Peg Amy, shaking her violently whenever he was upset.
Wag felt sorry for Peg Amy and when he fled Ruggedo's service, he took her with him. She grew to human size with Glegg's Instantaneous Expanding Extract, and then was animated by Reanimating Rays. Wag and Peg Amy met up with Pompadore and Kabumpo, and during their adventures, they learned that she was really the Princess of Sun Top Mountain, under an enchantment by the evil Glegg. She returned to human form and married Prince Pompa, and they rule Sun Top Mountain together. (Kabumpo in Oz)
Pompa and Peg had a daughter named Pajonia. They and most of the royal court were kidnapped by Princess Faleero and Prince Kettywig during an attempted coup, but were later rescued by Kabumpo, Randy, and Jinnicky. (The Purple Prince of Oz)