Yuru-chara often have a theme song with related dance routine, such as Kumamon's Kumamon Taisō (くまモン体操) which has seen over 2.6 million views on YouTube. Their name may also be a play on words, such as with Kumamon. Festivals and other events dedicated to these mascots were created, such as the Yuru-chara Matsuri (ゆるキャラまつり) held in various locations since 2008. Some mascots have also appeared in international conventions, such as Funassyi and Kumamon in the 2014 Japan Expo in Paris, France; and a small group in the 2014 Japan Matsuri in London. After finding out that Tigerlily is afraid of lighting, Stitch and Yuna chase a cloud to try and capture Raijin's son, also named Raijin, from it, but he's small and not very scary. While Mr. Honda the postman is sick, Yuna and Stitch deliver a dropped letter to a woman named Mrs. Tanaka. All the while, Stitch tries to land a good deed by getting back a letter from Yuna's father, whom she discarded with haste. Stitch and his friends are going to Tokyo Disneyland, with Yuna's father, Jumba, Pleakley, and Penny. While Stitch takes care of the babies, Yuna and Penny must try and co-operate together to find the antidote to get everyone back to normal.

Stitch and Yuna find a mysterious yellow alien flutist, who quickly gets everybody's collective attention. Stitch and Yuna go back in time to the day Jumba built Stitch. After stopping Gantu, Stitch learns that the reason Lilo didn't show up was that Lilo's sister Nani had given birth at the same time as their meeting, and the two make up after years apart. In the end, Yuna finally reunites with her father, just in time for Dads Day. Taking place before the events of "Boss" and "Dark-End", Ace appears to save the day and Stitch decides to help him. The latter two decide to play some pranks around the island, while Hämsterviel and Gantu go after the shrunken Stitch to crush him. Stitch stays away from Yuna to try to catch the two altered experiments, but gets captured by Gantu. He's a faerie who is found at places where the temperature below zero and stays beside people who tell scary stories or boring jokes.

After searching around but failing to find her, Kijimunaa reveals he found her and is taking care of her, as she's suffering a head cold. Stitch imitates a TV detective to find it. Gantu and Reuben trick the kids into going to a deserted island to find a flower said to grant wishes. When JJ, a student at Yuna's dojo, wishes his father wasn't so strict, a yōkai named Himamushi makes it come true. Discovering Hämsterviel's machine, Yuna's father and Stitch take a submarine to destroy the machine and save the ocean. Tired of being Hämsterviel's errand Couple keychains Kawaii boy, Gantu tries to strike out on his own, losing five experiments in the school. Meanwhile Hämsterviel, on orders from his new partner, Lady Delia, has recaptured the other experiments and begun mutating them with additional abilities. Beginning after "BooGoo", this season introduces an ending segment called "Kung Fu Dragon Pleakley", where Pleakley faces off against another alien character, usually one of Jumba's experiments, in a martial arts-style match with Jumba officiating, but usually is defeated by the abilities of his opponent.

Shortly afterward, a chicken shows up with a clothespin that was blown of Officer Suzuki's clothes line, which Stitch, Jumba, and Pleakley mistake for being the keychain and chase after it. Yuna, Stitch, Jumba, and Pleakley help Kijimunaa go to the Twin Caverns so he can become a guardian and help Gramma get better. However. Yuna, Stitch, and Kijimunaa run into a group of young pirates who are looking for the ship as well, so Stitch decides to tag along with them. Several years after the events of Leroy & Stitch, Stitch has since left Lilo and Kauai and is flying around space on a jet scooter he stole from Jumba, going back to his old destructive programming. Stitch and Yuna are sucked into an alternate universe by Experiment 272/Wormhole and meet an evil Stitch with a jetpack who enjoys destroying an abandoned city, along with alternate versions of Jumba, Pleakley, and Gantu. Stitch Obtains the Greatest Power in the Universe! It is the second television series in the franchise, following Lilo & Stitch: The Series (2003-2006) and preceding Stitch & Ai (2017). It was produced by Madhouse for its first two seasons (2008-2010), and by Shin-Ei Animation for its third season (2010-2011) and two post-series TV specials (2012 and 2015). Walt Disney Television International Japan co-produced all episodes and specials.