The descendants of the Kami Hida are among the largest and most powerful samurai in all the Empire. The burden of defending the Empire falls upon them, and they are both incredible warriors and skilled defensive tacticians. Hida samurai often resent the other Clans for enjoying their protection even as they mock the Crab for their mannerisms.
Of the eight Kami who competed within the first Celestial Tournament, seven went forth to honor their Emperor by creating Great Clans to serve him. Since that time, one additional Great Clan has been given leave ny the Emperor to serve him in the the same manner as the others, and one other self-titled "clan" has claimed the title but never been recognized.
In theory, the Great Clans command only what power is granted to them by he Emperor. This consists of the power to fulfill their specific duties without interfering with the duties of other clans, and to govern over the Emperor's lands bestowed to them in his name. In reality, of course, each clan commands considerable military, economic, and political power, enough to overthrow the Empire, and only the power of the other clans keeps them in check - that and the fact that no honorable Clan Champion would ever consider such a blasphemous and disgraceful act.
Although all Great Clans are ultimately loyal to the Emperor, they can and do have radically different outlooks on virtually every aspect of life, and conflicts between them are common. Most Emperors have historically chosen not to interfere with inter-clan wars because they permit the clans to vent their hostility honorably. After all, denying a massive force of noble warriors the right to pursue satisfaction in what they consider a matter of honor is generally a poor idea.
The stalwart Crab are the defenders of Rokugan, responsible for ensuring the Empire's southern border is secure against the demons of the Shadowlands. Centuries of constant warfare against inhuman foes have hardened the Crab into tremendously powerful and brutally practical warriors, but they have little sense of civility or manners. As a result they are often considered crude and barbaric by the other clans.
The Hida Family: +1Strength [CR]
The Hiruma Family: +1Agility [CR]
Silent and deadly, the Hiruma are the scouts and yojimbo of the Crab. They are as agile and graceful as the Hida are powerful, and warriors from the two families tend to complement one another very well. Hiruma samurai often have the unsavory duty of scouting the Shadowlands for enemies, a task that leads many to death or ruination.
The industrious Kaiu are responsible for th emost impressive and long-standing feats of engineering in all the Empire. They are the siege engineers and architects of the Crab Clan, and are responsible for maintaining the Great Carpenter Wall as well as its defenses.
Sinister in appearance and deed, the Kuni are among the most feared shugenja families in the Empire. Long ago, the family's leadership determined the only hope of defeating the Shadowlands lay in understanding it, and so the Kuni possess knowledge of things that would drive most men mad.
The tiny Toritaka family was once known as the Falcon Clan before tragedy threatened to destroy the Minor Clan completely. It was absorbed by the Crab to prevent a threat from growing within its ranks. The Toritaka hail from a region frequented by spirits, and they are highly knowledgeable about ghosts and spirits of all different sorts.
The Yasuki Family: +1Awareness [CR]
Strangely at odds with the other Crab families, the Yasuki are slight of build and devious of mind. They were once part of the Crane Clan, but joined the Crab in the third century, provoking the first great internal war in Rokugani history. They are merchants and courtiers, always looking for any means to gain an advantage for their Clan, and tend to be more concerned with monetary gain than is considered respectable for someone of the samurai caste.