Piyomon, also know as Biyomon, is the partner of Sora Takenouchi. She is expressive about her feelings and is affectionate towards Sora, helping Sora open up to her mother and mends their relationship. Piyomon evolves from Yokomon, and eventually evolves to Birdramon (Champion), Garudamon (Ultimate) and Phoenixmon/Hououmon (Mega).

In Digimon Savers, Piyomon is a Digimon that befriended Daimon Chika, Masaru's little sister.