In Ratatouille, the rat who becomes a chef is Remy.
Remy is a young rat with unusually sensitive taste and smell who dreams of cooking like his hero, the fictional chef Auguste Gusteau. Unlike the other rats in his colony, Remy sees food as an art rather than merely a source of survival. After becoming separated from his family in Paris, he discovers Gusteau’s restaurant.
There, Remy secretly helps Alfredo Linguini improve a ruined leek soup. The two form an unusual partnership: Remy hides beneath Linguini’s chef’s toque and pulls his hair to guide his movements. This lets Remy cook while Linguini appears to be the chef. The arrangement eventually helps expose Linguini’s connection to Gusteau and allows Remy’s talent to be recognized.
A common mix-up is confusing Remy with Gusteau, who is the famous human chef and Remy’s inspiration. Linguini is the human kitchen worker Remy assists, while Skinner is the restaurant’s suspicious head chef. The 2007 Pixar film was directed by Brad Bird and won the Academy Award for Best Animated Feature.