She is voiced by Lucy Hale.
When a baby laughs for the first time, a brand new fairy is born. Unlike other fairies, however, Peri and Tink were born from the same first laugh, making them fraternal twin sisters. They share many aspects when it comes to likes, personality traits, characteristics, and appearance. However, the most striking connection is their fairy wings, as they have the same wing-shaped pattern, which is unheard of, because fairy wing patterns are supposed to be distinctive and unique. As far as personality goes, Periwinkle is very bubbly and rather adventurous (in a mature way). She is often on the cheerful side and is always open to new ideas and innovations. Like Tink, she collects discarded items found in Never Land called "lost things," as Tink calls them. Peri, however, prefers to call them "found things."
Like every fairy, Peri is forbidden from ever crossing the border to the other seasons of Pixie Hollow, as it is said to be dangerous for a winter fairy because of the warm weather. Even so, Peri grew a fascination of the world beyond her own and dreamed of visiting it. When she meets Tinker Bell, the bond between the two fairies causes them to think of ways to cross the border. When they do, however, it causes danger.