Rokugan rests on the foundations of the Clans. Originally there were seven Great Clans, each formed from the followers of a single Kami. The followers of Hantei would become known as the Imperial Families.
The Great Clans are:
The Lion, Right Hand of the Emperor, soldiers and tacticians
The Crane, Left Hand of the Emperor, artists and duelists without peer
The Crab, Defenders of the Wall, the Shield of the Empire
The Dragon, enigmatic and withdrawn, guardians of obscure knowledge
The Phoenix, the shuenga, keepers of magical lore.
The Scorpion, Underhand of the Emperor, spies and saboteurs
The Unicorn, masters of cavalry, the explorers