Maruhage Empire

The Maruhage Empire (マルハーゲ帝国 Maruhage Teikoku) is a fictional kingdom established on Earth in the year 300X in the manga/anime series Bobobo-bo Bo-bobo by Yoshio Sawai. Also known as the Margarita Empire (anime) and the Chrome Dome Empire (American dub), it is the primary antagonist as well as the location of most of the actions in the series.

The series has not established the length of the existence of the Chromedome Empire, but it is known to have been in existence for at least 200 years, about the period of time for the first four "New Emperor Playoffs" to which an emperor is chosen from the strongest fighters in the world. The meaning and purpose of the empire prior to one-hundred years before the start of the series is considered a mystery that has yet to be revealed.

One hundred years ago, the Chromedome Empire had entered into its darkest and most destructive period. The ruler during this period was the infamous Czar Baldy Bald the 3rd, a powerful cybernetic being who desired the destruction of humanity. Gathering together many of the most powerful warriors on his side, the emperor declared war on humans and used his power to attack and kill as many as possible both in his kingdom and around his world. Through a great war, the empire grew from a minor power to the most powerful kingdom in the world within four days! Under his command were twenty-six blocks (each named after a letter of the alphabet, with "A" as the strongest and "Z" as the weakest) and five-million soldiers. However, there were some kingdoms that did resist the power of the growing empire. One of his greatest resistance was found from the Hair Kingdom (毛の王国 Ke no Oukoku), a land where warriors powered by the mysterious "Hair Ball" were able to drive away the emperor and his forces. However, just at the height of their infamy and power, just when the entire world was under their command, all of the powerful warriors, including Czar Baldy Bald the 3rd, entered a cryogenic sleep, never to be reawakened...

With the Third and his forces entering permanent cold sleep, it is unknown who became the next emperor of the Chromedome Empire. However, the next emperor to take the name of "Czar Baldy Bald" would come close to seventy years after the heyday of the Third Era! A young boy, born completely bald to the ruler of the Chromedome Empire, became the leader of the land from a very young age, proclaimed even in his youth as Czar Baldy Bald the 4th. But while the world embraced their new young leader, his prestige would haunt one boy in particular: Hydrate, the new emperor's younger brother! Because of being born after his brother, Hydrate was forced into being treated like a second-class citizen in his own household. He attempted to find a way to gain respect from the 4th, attempting to learn the most powerful Shinken from famed teacher Landmine Dandy. Although he trained and prepared for eight years, this too fell apart: his teacher was taken apart (by his own daughter Torpedo Girl) and he found himself banished into the Dark World (闇の世界 Yami no Sekai) underneath his brother's castle ten years before the start of the story. Over time, Hydrate would use the power of the Dark World to grow into an empire of his own...

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Wikipedia