From Bulbapedia, the community-driven Pokémon encyclopedia.
Peg (Japanese: プルーフ Proof) is a minor character who appeared in Zoroark: Master of Illusions.
Peg is a cheerful girl who is an avid fan of the Pokémon Baccer World Cup team Coronet Fighters, and her backpack is used to help cheer them on during matches. She is evacuated along with the rest of the city due to Zoroark's attack. Peg bursts in and confirms Officer Jenny's explanation of what is happening in Crown City, but does not interact with Ash and his friends after this. She is seen returning, following Kodai's defeat, watching the video exposing Kodai's evil schemes and commenting that he's a terrible man for doing such a thing. Peg is last seen cheering for the Coronet Fighters in the Pokémon Baccer World Cup.
Peg's favorite Pokémon are Magnemite, Magneton and Magnezone. Her Magnemite-themed attire is also related to her backing of the Coronet Fighters team; Mt. Coronet is where Magneton evolves into Magnezone.
Peg made a cameo appearance during the ending credits of White—Victini and Zekrom and Black—Victini and Reshiram.