During the epic conflict history remembers as the Clan War, an unprecedented number of ronin gathered together under the banner of Toturi, the Black Lion. The former Lion Champion, cast out when the Akodo family was dissolved, Toturi assembled thousands of his former clansmen who had become wave men, along with many former Scorpion samurai (whose clan had also been dissolved) and legions of simple ronin looking for the opportunity to be part of something greater than themselves. The organization known as Toturi’s Army fought to protect the people of the Empire and the stability of the Empire itself. After the war, many of the group rejoined their former clans; those who remained formed a new organization, the Wolf Legion. For decades, the Wolf Legion continued to protect the people of Rokugan, alternately ignoring or confronting the selfish politics of the Great Clans.
Generalization: The Wolf Legion are similar in many respects to Tawagoto’s Army (presented in the L5R RPG core rules) in that they are a benevolent organization devoted to the greater good of the Empire. If the GM is running a game in a different era or timeline, they could even represent a more advanced portion of the same organization as Tawagoto’s Army.