Chibita, created by Fujio Akatsuka, transitioned from a recurring figure to a protagonist in spin-offs. His appearance initially varied before solidifying as a diminutive child standing about 60cm tall, featuring a bald head with a horizontal crease and one protruding hair, wide eyes, a pointed nose, and distinctive hardened mucus cheek markings. He typically wears a buttoned shirt—often red or yellow—and pants. His exceptionally durable head deflects impacts and bullets, while he possesses keen eyesight and cat-like speed.

Childhood portrayals show a resilient, mischievous orphan frequently living in scrap-yard pipes or temporary dwellings with fluid family structures. He was often a bullied underdog or a troublemaker targeting the Matsuno sextuplets, though later depictions emphasized sympathetic qualities. Core traits include fierce determination, a vengeful streak when wronged, and a distinctive "Kekeke" laugh. He forms strong bonds with animals, especially cats and frogs, and cherishes oden, typically a skewer with konjac, fried tofu, and narutomaki. His speech features a rough accent and phrases like "Teyande barou chikusho!"

Key relationships define his arcs: his dynamic with the Matsuno brothers fluctuates between rivalry, mutual pranks, and rare camaraderie. He frequently partners with Iyami in schemes against the sextuplets, viewing him as a mentor or substitute family figure despite occasional betrayals. Interactions with Totoko range from romantic interest—including a storyline revealing them as cousins—to antagonism. Other connections include Dekapan as a neglectful father figure and Hatabō as a sometime underling or companion. Tragic moments include his care for an abandoned baby and a flower spirit that dies due to his neglect.

Spin-offs like *Akatsuka-kun Can Do Anything* (retitled *-chan and Chibita*) and *Chibita-kun* position him as the lead. These explore varied scenarios: partnering with a boy named Dorutaro ("-chan") in comedic or dramatic adventures, or navigating life with a sister named Chibiko. As an adult in *Osomatsu-san*, standing roughly 140cm tall and retaining his signature look, he operates an oden stall. His personality shifts toward responsibility, though he remains exasperated by the sextuplets' unpaid debts and collaborates reluctantly in their scams. The film *Osomatsu-san: The Movie* reveals teenage turmoil: briefly wearing a wig while working as a French chef apprentice and struggling with depression before embracing his passion for oden.

His development across media highlights resilience amid adversity and loyalty to companions, evolving from comic relief to protagonist. His adult incarnation occasionally exhibits darker traits, like violent retaliation if his single hair is pulled, yet ultimately aids allies in dire situations.