Flying Dutchman
The Flying Dutchman (さまよえるオランダ人, Samayoeru Orandajin) was the soul of the ghost ship Nidhogg (ニーズヘッグ, Nīzuheggu) that was being used by Medusa to gather more souls for kishin. He fought with a gun, just as Kid, though the term "gun" might not be a good enough comparison; the gun itself resembles a miniature cannon.
Mangaography