Sonichen and Rosechen lived in a land called Yeppiland which is located on the planet Gaus. Gaus is located in the Milky Way in a hidden cluster connected to Earth via portals located at various places on the planet. Gaus had evolved at about the same time as Earth.
Sonichu and his princess Rosechu were the leaders of the Sonichu clan on Gaus. The Sonichu clan was a well known clan both on Earth and Earth’s sister planet Gaus. The exact origin of the Sonichu clan is unclear but the best available evidence points to mutant clones from the planet Gaus visiting colonial Virginia sometime in the 1700s and forming isolated settlements with branches of Native Americans that had broken off from the main tribe. Within a few generations descendants from these Native Americans were already establishing settlements on Planet Gaus where their eccentricities were much better accepted in Gausian society than on Earth.
Leader of the Sonichu clan (Sonichu and his princess Rosechu)
Their arch-rival the Slaweel Clan had originated shortly before the Sonichu clan. The enmity between the two clans was the result of continual mishaps between the two groups as well as deep irreconcilable differences between the two. Some of these mutants including Slaweel were linked to the Transgabriel Element Satanium at the time of the fall during the early evolution of the planet Gaus.
The more junior members of the Sonichu clan were entirely based on Planet Gaus.