Moto family

Shortly after Shinjo and the Unicorn left the Empire, they discovered a tribe in the Burning Sands called the Ujik-hai. Those Ujik-hai that chose to join the Unicorn became the Moto family. As such, the Moto are the only family of the Unicorn Clan to have come from outside of Rokugan.

The Dark Moto
After the Return of the Unicorn the Moto saw what the threat of the Shadowlands were for the first time,, and decided to show their strength by defeating it. Led by their Daimyo, Moto Tsume, they rode into the Shadowlands, hoping to aid the Crab in their fight. None returned. (3E p. 16)

Return of Shinjo
When the Scorpion Clan returned from their exile after the disapearance of Toturi I, they brought back the remainder of the Moto as well as their Kami, Shinjo. Shinjo discovered that the Unicorn Clan had been corrupted by the Kolat (Quolat) and removed the Shinjo family from power, making the Moto the ruling family of the Unicorn.

Moto Khan
Historically, the daimyo of the Moto was called daimyo, just as all the other families and clans in Rokugan. Recently, with the coming of the remaining Moto from the Burning Sands with Shinjo, the Moto daimyo have taken to calling themselves "Khan" instead. With the promotion of the Moto family to the leadership of the Unicorn Clan as a whole, the Unicorn Clan Champion has been referred to as the Khan as well.