Dr. Jumba Jookiba, a Kweltikwan scientist from Quelte Quan, is notorious for engineering 628 illegal genetic experiments, most famously Experiment 626 (Stitch). Dismissed by critics as an "idiot scientist," he defiantly proclaims himself an "evil genius," though his sociable demeanor and unexpected compassion contradict this label. His alliance with Dr. Jacques von Hämsterviel originated at Evil Genius University, where their shared ambitions led to a joke shop venture and genetic experiments financed by Hämsterviel’s criminal activities. The partnership dissolved in betrayal, culminating in Jumba’s arrest by the Galactic Federation. Following Stitch’s escape, Jumba secured conditional release to retrieve him, eventually marooned on Earth with Agent Pleakley. Gradually, he transitioned from chaos-driven scientist to a protective figure within Lilo Pelekai’s unconventional family. Though he insists on malevolent motives, he demonstrates affection for his experiments and allies, retrofitting Lilo’s home with alien tech and aiding in rehabilitating his creations. His dynamic with Stitch shifts from rivalry to mutual respect and familial bonds, with Jumba openly celebrating Stitch’s personal growth. Jumba’s imposing frame features purple skin, four eyes, a bulbous head, and three surviving hairs—a casualty of Experiment 177. On Earth, he adopts a yellow Hawaiian shirt, blue shorts, and gray boots, abandoning his former lab coat and prison attire. His physical prowess includes superhuman strength and resilience, paired with a brilliant mind capable of intricate inventions and flawless recall of his experiments’ specifications. Notable events include his coerced creation of Leroy under Hämsterviel’s threats, discreetly embedding a vulnerability to “Aloha ʻOe” via Lilo’s record. Despite chances to resume his scientific career, he opts to remain with Lilo’s ʻohana, underscoring his loyalty. His past hints at a turbulent marriage—evidenced by his dread of a lamprey eel-like ex-wife—and profound reverence for his mother. Across various stories, Jumba navigates mischief and sincerity, devising new experiments while steadfastly prioritizing his adoptive family. His journey from disgraced outcast to redeemed ʻohana member encapsulates themes of redemption and the transformative power of unconventional kinship.