First appearing at the end of the third film, Peaches was born while in the underground dinosaur world. Her name was the codename her parents Manny and Ellie made up as they entered the dinosaur world and were looking for something quick to announce on her arrival. Identical to Ellie when she was little, Peaches takes the colors of his father’s hair, becoming a perfect blend of both parents.

In the fourth instalment, Peaches is a young teenager. While separated from her father, she meets Ethan, a young mammoth she has a crush on.