The Kingdom of Naples (ネアポリス王国 Neaporisu Ōkoku) is a fictional country featured in Steel Ball Run. It is Gyro Zeppeli's birthplace and while Naples isn't visited, it is shown in details through flashbacks and other narrative reveals.

Although the Kingdom of Naples is inspired by the real-life NaplesW, much of its history and characteristics are fictitious.


The Kingdom of Naples is a very small country situated in the Italian Peninsula, with a size of 800 km². Nonetheless, it has about 780,000 inhabitants.[1]

As its name indicates, the country is ruled by a king, Dell'Ovo II. The country is particularly oppressive and any challenge against the authority of the king is suppressed violently. As such, even people slightly related to a known traitor to the crown are to be considered treasonous and executed, leading to the imprisonment of Marco a young child. Moreover, the laws of Naples make it so those found guilty of adultery can be executed.[2] The kindgom employs professional executioners who carry out beheading in the name of the king, among them is the Zeppeli Family.

Like all kingdoms however, a moment of great celebration can lead to a total amnesty of political prisoners.[3]

Duels are allowed in the Kingdom of Naples under observation by formal witnesses. However, because of the unfair advantage between nobles and the rest, people can also be forcibly exiled.

The country has a unique tradition in the Spin, an art of making objects rotate to weaponize the energy of the rotation. Not only it is used in medicine[4], but also used by the executioners[3] and royal guards[5] of Naples. An esoteric item named the Zombie Horse is also in the possession of the king and can be handed to its agents.


The Kingdom of Naples was founded in 1302 to provide military protection for the Vatican, and the country has had close ties to the Catholic Church ever since.[1]

Naples has survived the unification of Italy in 1870 and has remained neutral on the matter.[1] However, the country has known a period of unrest as many plots against the throne were regularly thwarted by the authorities. Ultimately, a revolution toppled the king and the country was absorbed into a republic.[6]

Naples has an influence in the Steel Ball Run, having sent agents to retrieve the Saint's Corpse, among them Hot Pants. Moreover, Gyro Zeppeli was sent specifically to win the race.


Gregorio Zeppeli Gyro Zeppeli Hot Pants Wekapipo Marco
Gyro's mom
Gyro's siblings
Oyecomova Gyro's Mother Gyro's Siblings Noble Prisoner
Gyro's girlfriend
Wekapipo's Sister
Hot pants' brother

Hospital Patient Wekapipo's Younger Sister Wekapipo's Brother-in-law Hot Pants' Brother



  • "Neapolis" (ネアポリス Neaporisu) is the original Greek and Latin name of the city of Naples. In Japanese, the modern city of Naples is known by its Italian name "Napoli" (ナポリ Napori).


  1. 1.0 1.1 1.2 SBR Chapter 24: "Interlude"
  2. SBR Chapter 45: "The Land of Promises: Sugar Mountain, Part 1"
  3. 3.0 3.1 SBR Chapter 21: "Gyro Zeppeli's Mission, Part 2"
  4. SBR Chapter 52: "Wrecking Ball, Part 2"
  5. SBR Chapter 51: "Wrecking Ball, Part 1"
  6. SBR Chapter 95: "The World of the Stars and Stripes -Outro"

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