Stitch! (season 2) 720x416 The Mischievous Alien's Great Adventure - (2009 Lang: English)

Characters
Main characters

Stitch (スティッチ Sutitchi?)
Stitch (original name: Experiment 626), an alien from outer space, one day ends up falling to an island located on Earth, called Izayoi Island, off the coast of Okinawa. He discovers "The Spiritual Stone" on Okinawa, with the help of his new friend Yuna, and learns it can grant his wish of becoming the strongest in the universe, provided he does 43 good deeds. Thus, with his Good Deed Counter made by Jumba, he is able to keep track of his good deeds, and keep track of his wish of becoming strongest in the universe. However, he has mischievous tendencies that often make him lose deeds due to his overabundance of such things.

Yuna Kamihara (加美原ユウナ Kamihara Yūna?)
Yuna is a young Japanese girl; a tomboy at that, and is a 10-year-old 4th Grade elementary school student (11-year-old 5th Grade elementary school student in Stitch! Zutto Saiko no Tomodachi, albeit with her move to Okinawa New Town) who lives on a fictional island off the shore of Okinawa in the Ryukyus called Izayoi Island. Her personality is sweet and outgoing, while still tough and feisty all in all. Living on Izayoi Island, she learns and studies karate, having learned it from her grandpa. Her grandpa also did the honor of giving her a special type of starsand, as a good luck charm in her study of karate before he left. Yuna lives a rather normal cherished life with her grandma, Obaa. The other majority of her family are elsewhere, 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 life remained normal yet happy until one day, after a varied coincidence, she meets a strange creature that came crashlanding from the Turo system of outer space, Experiment 626, or as we know him, Stitch. From then and there when they met, the two became best friends and the duo go on various adventures on Stitch's quest in order to be "good". Yuna though, has a strong sense of justice and an overbearing attitude, which make her a tomboy, and that shows throughout the series. 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 25 February. It can be assumed that Yuna's favorite animal is a porpoise or dolphin 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.

Dr. Jumba Jookiba (ジャンバ博士 Janba Hakase?)
Jumba is an "evil genius" scientist, the one who created Stitch and the other 625 experiments made before him. He is assigned by the Galactic Council to watch over Stitch, and lives with Yuna and Obaa. He is more friendly in this series than the original, and has less of a penchant for evil.

Agent Pleakley (プリークリー Purīkurī?)
He is a one-eyed alien working for the Galactic Council and Earth expert. He is Jumba's best friend, and lives with him along with Yuna, Obaa, and Stitch.

Obaa Kamihara (Grandma)
Yuna's grandmother whom Yuna lives with. She is one of the three characters that believes in the existence of yōkai.

Kijimunaa
He is a little yokai, who is Yuna and Stitch's friend. He is kind of a coward, but with the help of his friends, he can find the courage to best whatever he can.

Other characters

Angel (エンジェル Enjeru?)
Experiment 624: A pink female experiment who is Stitch's love interest. Stitch is madly in love with her and she shares the same feeling. Angel travels a lot, but she stops at the island, at times, to visit Stitch and Yuna. It turns out that while Stitch is immune to Angel's song if sung by her, if it is in a different voice it still will turn him evil.

Piko (named Penny in the English dub)
A blonde girl, rival to Yuna. Piko/Penny is self-centered, impatient and in some cases, a bit snobby. She often takes great pride to mock and deride Yuna and Stitch in any case, often ending with Yuna and her fighting. There's rare occasions where she and Yuna can get along though. Her father runs the island's pineapple plants and her family runs the highest rated hotels and resorts on Izayoi. There's a habit with Piko/Penny where when she's angered, she'll often end her ranting with a comparison of something akin to pineapples. She is also a black-team karate leader. Piko/Penny may have been idealized after Hawaiian pop song "Pineapple Princess". Piko/Penny dislikes Sae but secretly does believe that she dresses better than her.

Sae (named Sasha in the English dub)
A young girl about Yuna's age who is introduced in the second season. A transfer student from Koube, she joins Yuna's class amidst the second season. She believes in good fashion and beauty, and is girly in spirit, often talking about fashion, love and all. She's also quite ditsy at times. She believes Yuna has a good fashion sense, and becomes good friends with her; as her fashion sense reminded her of her mother, a tropical fashion designer. Her father is a doctor. She not only has a rather brave personality, like Yuna; but she has a sweet and gentle personality too. Kouji (Kenny) has a crush for Sae, unbeknownst to her, and Piko (Penny) secretly dislikes Sae, but believes that Sae dresses better than she does.

Zuruko (named Tigerlily in the English dub)
Yuna's mean, bullying cousin who appears mid-way through Season 2. Although she may seem nice at first look, once you get to know her you'll discover that isn't the case. While she's kind hearted to others she is harsh and cruel to Yuna for unknown reasons, and constantly blackmails her into doing all the chores around the house (Although she later claims that she's only trying to do a role-model for Yuna). But when Yuna and Stitch move off to live with her in season 3, she becomes more friendly with Yuna and treats her nicer, although she still forces her to do most of the house chores.

Takumi (named Hiroman in the English dub)
A boy from Okinawa New Town introduced in the third season. A popular soccer player, and love interest of Reika, he often acts cool and calm. He bears a secret of acting as a maid to his sisters, and even dressing up in bishoujo-styled outfits for his sisters' enjoyment. His name is obviously a play on "hero man". It is hinted that he and Yuna have feelings for each other since Yuna often saves him from trouble; in the episode "Dorkifier", it was shown that Yuna blushed at him.

Reika (named Jessica in the English dub)
Yuna's rival in season 3. She has a crush on Takumi and friends who she bosses around. She, like Piko/Penny from the first two seasons, likes to mock and deride Stitch and Yuna. She also bears a trait of saying rather dull jokes and puns, often met with silent response. She is followed by two girls, Torriko and Makiko.

Lilo Pelekai
A character mentioned in the English dub, she was Stitch's best friend in the past, but one day she left for college. However, her mention in the English dub is only due to Disney intertwining Stitch! with Leroy & Stitch (and the television series preceding it) for the English dub. The Japanese original bears little to no direct mention of Lilo, though they do mention a "bigger Hawaiian girl" in episode 2 similar to the main character in this series. However, episode 23 of season 3 had Lilo visit Okinawa in cahoots to reunite with Stitch, only for a while though. Lilo is now grown up, and has a daughter who looks like her when she was younger, named Ani.

Villains

Dr. Jacques von Hämsterviel
The villain who was a college buddy of Jumba. Much like the rest of the franchise, he bears a want to defeat Stitch. Hämsterviel also wishes to steal Stitch's Good Deed Counter in order to gain ultimate power.

Delia/Dark End
The true main antagonist of the third season. An evil alien woman who is introduced in season 3. She is in a partnership with Dr. Jacques von Hämsterviel to get the Neo-PowerChip that is inside of Stitch. Delia altered a majority of the experiments, which had caused them to become physically stronger and evil, and Angel, who is rescued by Stitch. Delia usually calls Dr. Jacques von Hämsterviel the wrong name such as Hamu Sama, or Hämusta Sama and then, when Hämsterviel's plans go wrong she eventually punishes him with various machines, explosions or robots.

Captain Gantu
He works under Dr. Hämsterviel, to steal Stitch's Good Deed Counter. According to the English dub, Gantu was dishonorably discharged from his Galactic Federation job due to bad karaoke singing. He bears an over-obsession to a television drama called "Red Rose Maiden", or "The Young and the Stupid" in the English dub. He has a huge crush for the main character of the drama, Princess Michigo.

Reuben
Experiment 625: He has all of the same powers as Stitch and works alongside Gantu, but he is lazy and eats sandwiches. Dr. Hämsterviel claims he doesn't do much beside make sandwiches all the time. During the series he isn't much of an enemy to Stitch, even coming to visiting him sometimes. During "Onigiri Rueben", he becomes fond of Japanese rice balls, and even includes them among his sandwich ingredients.

Cyber
Experiment 000: He is an evil experiment that is a cyborg version of Stitch.