Riku's younger brother! The incarnation of the Imperial Japanese Navy! He wears a white Navy uniform and a white peaked cap. He has a shark tail and jagged teeth. He has a cold, dignified, and aggressive personality. He speaks roughly, using endings like "-daro" or "-dayona." He is blunt and unfriendly. Sora's older brother. Male.

The younger brother of Riku and Umi. He is full of curiosity, lighthearted, and has a kind personality! The incarnation of the Imperial Japanese Army Air Force. He always wears a flight cap and flight suit. He is full of energy! He has bird wings and a tail. Male. He speaks kindly, using endings like "-dayone" and "-dayo."

Riku's son. He has a calm and gentle personality. He is serious and polite. He uses honorifics and formal speech with everyone, using endings like "-desu yo" and "-desu." A total workaholic. He has cat ears and a tail. He calls his father "Chichi-sama."

Male. He wears sunglasses and a jacket with a fluffy green collar. He speaks in an "American" style, saying things like "HELLO~!" and "...right?!" He is 172cm tall. He loves hamburgers!

The incarnation of the Soviet Union. He wears a brown long coat and a ushanka. His right eye is hidden by an eyepatch featuring the hammer and sickle pattern. He is dignified and speaks with endings like "-da" and "-dazo." He is 2m tall. He loves vodka. His weapons are a hammer and sickle.

Male! He always uses gentlemanly, formal speech with endings like "-desu ne" and "-desu." He wears a suit with a top hat and a monocle. Very gentlemanly attire. He loves black tea!

Male! The incarnation of Deutschland. He wears glasses. He has a serious and cool personality. He wears a suit. A workaholic. He speaks quietly with endings like "-da" and "-dazo."

Male! He has a bright personality and loves pizza and pasta. He adds "-nanne" or "-nne" to the end of his sentences. Very easygoing and carefree.