Hakutaku, a divine beast from Chinese mythology, embodies good fortune and commands vast knowledge spanning history, literature, medicine, and agriculture. He dwells in Shangri-La (Tougenkyo), serving as a pharmacist and herbal medicine authority who mentors apprentices like Momotarou and rabbits in remedy preparation.

His appearance features white fur, a humanoid frame, pointed ears, and forehead horns. He closely resembles Hoozuki in physique, facial structure, slanted eyes, and sleek black hair, though Hakutaku smiles more readily—a likeness fueling mutual hostility between them.

Intellectually sophisticated yet notoriously womanizing, Hakutaku relentlessly pursues romantic entanglements. His infidelities consistently trigger violent rejections and physical clashes with former partners. An arrogant, condescending demeanor intimidates others, though his expertise remains invaluable.

His ancient rivalry with Hoozuki ignited when Hoozuki deliberately intoxicated him during afterlife research, extracting secrets of the Chinese underworld. Hakutaku, after divulging knowledge, fell into the human world and was captured by the Yellow Emperor as Hoozuki abandoned him. Their feud escalated during a Japan-China bonding event over a trivial bet regarding a passerby's physical traits. Subsequent encounters involve mutual humiliation attempts, typically favoring Hoozuki.

Professionally, Hakutaku aids Shangri-La through pharmacology and mentorship. A recurring comedic flaw undermines his gravitas: he possesses a complete inability to draw, with his disastrous artistry serving as a persistent gag.