Movie
Description
King Nikochan proclaims himself ruler of the Nikochan-seijin, an alien species hailing from Planet Nikochan. This tiny world, mirroring a distinctive physical feature of his kind called a Niko, spans a mere 2,000 meters in diameter. Its 83 inhabitants, including the King, traditionally farm radishes. Nikochan possesses a uniquely inverted anatomy: buttocks sit atop his head, noses reside within antennae, and ears are positioned on his feet—a configuration leading to practical challenges like flatulence-induced self-intoxication. He shares his species' inverted aesthetic sense, deeming humans unattractive while humans find Nikos similarly displeasing.

Driven by ambitions of universal conquest, King Nikochan, accompanied by a loyal servant, had subdued 99 planets before setting his sights on Earth. His invasion strategy involved destroying Mars to terrify Earth's populace, but this plan faltered when Arale Norimaki and Gatchan accidentally damaged his spaceship; Gatchan then consumed the vessel. Stranded on Earth, the King sought spacecraft repairs from Senbei Norimaki, who mistakenly built him a car. Trapped, King Nikochan and his servant resorted to selling roasted sweet potatoes with squid for survival.

Senbei later constructed a functional spacecraft using gravity-adjusting technology, enabling their return to Planet Nikochan. Arriving home, King Nikochan discovered hostile forces had usurped his throne. Arale intervened, defeated the invaders, and restored peace. Sweet potatoes with squid were subsequently declared the planet's national dish. Despite this resolution, King Nikochan reappeared in the original series' grand finale.

His exploits extended beyond the main narrative. In the spin-off "Dr. Mashirito and Abale-chan," he allied with the Tech-Tech aliens during their Earth invasion, though the android Abale resolved the conflict independently. He also featured in Akira Toriyama's "Pola & Roid," attacking the protagonists en route to Earth but fleeing when Pola disguised herself as Arale. Within the "Dragon Ball" series, he was depicted collecting trash in Penguin Village, mistaking it for treasure, and later joined the Red Ribbon Army in the "Dr. Slump" remake arc. His spaceship, frequently repaired and destroyed—often by local police or characters like Goku—left him perpetually stranded.

Video game appearances expanded his role. In "Dragon Ball: Origins 2," he encountered Goku during a quest for a special lens, surrendering his binoculars after his spaceship was wrecked. Other bonus levels showed him collaborating with antagonists like Emperor Pilaf to repair machinery in exchange for spacecraft parts, though these alliances invariably collapsed. His character consistently balanced delusions of grandeur with comedic ineptitude, evolving from a would-be conqueror into a recurring figure entangled in absurd misadventures across multiple media.