Linna, also known as Rinna Charat, is a supporting character in the anime Di Gi Charat Nyo. She originates from the same planet as the main protagonists, Di Gi Charat and Petit Charat, but is not directly related to them. Linna first appeared in the earlier series Panyo Panyo Di Gi Charat, where she is depicted as a childhood friend of Dejiko and the owner of a bakery. In Di Gi Charat Nyo, she retains her role as a friendly and capable cook, often helping others with her culinary skills.

Linna's most distinctive personality trait is her narcolepsy; she frequently falls asleep at inappropriate moments, which provides a recurring source of gentle humor in the series. Despite this tendency, she is cheerful, kind, and reliable when awake. Her primary motivation seems to be a desire to support her friends and contribute through her baking, rather than seeking personal ambition or adventure.

Within the story, Linna appears as a supporting figure who interacts with the main cast, particularly Dejiko and Puchiko. She is sometimes shown in competition with other characters, such as Daifuku Ankoro, over baking prowess, though her narcolepsy often interrupts these contests. Her key relationships are with the other Cat Charat characters from her home planet, including Mike Charat, and she maintains a friendly rapport with the Earth residents she encounters. While Linna does not undergo significant character development over the course of Di Gi Charat Nyo, her consistent personality and situational humor make her a memorable part of the ensemble. Her notable abilities include expert-level baking and a tendency to fall asleep suddenly, the latter of which is both a comedic weakness and a defining characteristic.