Originating from the planet Quelte Quan, Kweltikwan scientist Dr. Jumba Jookiba gained notoriety for creating over 628 illegal genetic experiments as lead scientist at Galaxy Defense Industries. Among these was the infamous Experiment 626, known as Stitch. Designed for destruction, these experiments led to his arrest and trial by the United Galactic Federation. Following Stitch's escape to Earth, Jumba received temporary release to capture the experiment, aided by Agent Pleakley. A self-proclaimed 'evil genius,' Jumba graduated from Evil Genius University with Dr. Jacques von Hämsterviel. Together, they founded the business 'Jokes on You,' which saw Hämsterviel funding Jumba's experiments for a quarter-century. Hämsterviel eventually reported their illegal operations to the Galactic Federation, causing both arrests and leaving Jumba with lasting resentment. Jumba possesses a large, hippo-like physique. His back is purple, while his face and torso are pink. Four eyes with yellow sclerae and three short black hairs on his head complete his distinctive look. On Earth, he favors yellow or light blue Hawaiian shirts, blue shorts, and gray boots—a stark contrast to his previous prison jumpsuit and lab coat. Initially ruthless and destructive, Jumba experiences profound growth upon meeting Lilo Pelekai and her sister Nani. Defying orders to rescue Lilo from Captain Gantu reveals his emerging compassion. He integrates into Lilo's ʻohana, embracing a fatherly role and displaying paternal pride in his chaotic experiments. Despite retaining mischievous tendencies and referring to himself in third-person with broken English and a vague Russian accent, he evolves into a protective, sociable figure who values familial bonds. His superhuman strength and durability are proven when he withstands multiple impacts from a Volkswagen Beetle during confrontations with Stitch. Yet his defining trait remains genius-level intellect, enabling the creation of complex genetic experiments and advanced technology from Earth materials. He invented the Tantalog language, spoken by his species and creations, alongside developing fusion chambers, plasma weaponry, and specialized vehicles like the X-Buggy. Relationships drive his evolution: He shifts from viewing Stitch as a destructive creation to loving him as a son, while his dynamic with Pleakley transforms from antagonism to deep friendship through shared experiences. His personal history includes fear of a nagging ex-wife and respect for his mother. In expanded narratives, Jumba continues creating experiments based on Chinese mythology while residing with Lilo's family. After Hämsterviel's defeat, he rejects returning to his lab, cementing his loyalty to Earth by choosing familial bonds over professional prestige.