Yūna (ユウナ, yuuna ?) is a young tomboyish Japanese girl that is in the new Stitch! Japanese Anime series. She is in 4th grade and lives on a fictional island off the shore of Okinawa called Izayoi. Living on Izayoi, she learned and studies karate, living a rather normal life, but having to deal with minor problems living with her grandmother, Obaa. Her father is out at work a lot as a marine biologist around Okinawa, and her mother died when she was an infant in a typhoon. Her personality is sweet and outgoing, while still tough and feisty all in all. However, one day, she meets a strange creature that has come from the depths of space, Stitch.
She teaches Stitch how to do karate and be "good" while also meeting some of Stitch's family from outer space: Jumba (Stitch's father), Pleakley (Stitch's uncle), Angel (Stitch's girlfriend and cousin), and all his other cousins.
She has a strong sense of justice and an overbearing attitude, which make her a tomboy, and that shows against evildoers like Dr. Hamsterviel, and against rivals like Penny and her gang of bullies. The creators of the anime got Yuna's name from the Japanese name of sea hibiscus out in Okinawa (known in Japanese as Yuna). Yuna's birthday is February 25. It can be assumed that Yuna's favorite animal is a porpoise from a few instances in the series. Yuna isn't good at mathematics, often getting low scores on math tests. Yuna's last name, Kamihara, wasn't unveiled until much later, although previous guesses were Chitama, after the dojo and the forest on Izayoi and Hanako, which was Yuna's previous name and design during development of the anime.
In Stitch and Experiments however, she was portrayed differently at first along with Ai as they were brainwashed by Hamsterviel to kidnap Stitch and the other experiments but were out of the trance and were saved by Gantu. Since then Yuna later moved to Kokaua Town and does have trouble adapting to American culture. She does have a crush on Taro and some of her celebrity crushes include Jackie Chan, Bruce Lee, Sonic the Hedgehog, Ranma Saotome, Tom Cruise, Bruce Willis, Wesley Snipes, Will Smith and Jonathan Taylor Thomas. She lives with her parents and her grandmother and attends Lilo's classes at school since she is friends with her. Some of her favorite obsessions include Pokemon, Godzilla, Puffy AmiYumi, Sonic the Hedgehog, Studio Ghibli, Anime, Tokyo Pig, Inuyasha, The Simpsons, Recess, karate, Tom Cruise movies, Kim Possible, video games, manga, Hey Arnold, Rocko's Modern Life, Men in Black, Batman Beyond, Marvel, Star Wars and Steven Spielberg just to name a few. She is voiced by Janice Kawaye.
- In the English dub, when Remmy shows Yuna the memory of her mother humming a tune to her when she was a baby, the tune she is humming is "Baby Mine" from the Disney movie Dumbo. The sequences are very similar, as it shows Dumbo's mother cradling her calf in her trunk.
- The English dub states that in one episode, Yuna's age was 9, but later 12 in another episode in line before Stitch! ~Zutto Saiko no Tomodachi~. However, this age flux is actually an English dub error, as the Japanese original states on many an occasion that Yuna is 10 for the first series and then in Stitch! ~Zutto Saiko no Tomodachi~, 11 rounded off. Knowing this, the episode "Stitch's Surprise Party" has Yuna turn 10 and remain so for the entirety of the first series. Also, a later Zutto episode, "Stitch's Dreams", has Yuna turn a proper 12 following her move to New Town at 11, respectively.
- Obaa (grandmother)
- Officer Suzuki
- Mister Honda (mailcarrier)
- Other creatures from the forest