The character awakens from prolonged suspended animation inside a Mount Fuji containment structure, emerging to battle supernatural threats invading Earth. His undefined origin centers solely on this reawakening. His driving motivation stems from Spectro—a demonic ruler commanding ghostly and monstrous forces—who murdered his father and abducted his mother into a hellish dimension. This fuels his core mission: rescuing his mother and combating Spectro's legions of demons, witches, monsters, and ghosts. The narrative weaves horror elements, including virgin sacrifices, immolations, and familial destruction.

His companionship evolves dynamically. Initially joined by Pinboke (or Xereta), a loyal talking dog providing comedic support, he later adopts orphaned boy Roko/Rocco as a dedicated human sidekick after eliminating a vampire family.

He wields exceptional physical prowess, described as having nerves of steel and the strength of 50 men. His signature magic sword emits energy rays from gemstones embedded in its hilt and alters size when wielded. He can also generate fragile, short-lived duplicates of himself.

Visually depicted as a young boy, his sword notably resembles the Sword of Omens from *Thundercats* in design and powers, predating that series by decades.