Manji Clan
From Tekkenpedia
The Manji Clan is a group of Robin Hood-esque ninja, lead by Yoshimitsu, who steal from the rich and give to the poor. Kunimitsu was once second in command, until she was expelled by Yoshimitsu when it was discovered that she was stealing from the clan's funds.
The sword wielded by Yoshimitsu in several installments is a sign of the current leader. When a new leader in the clan is elected, the former leader is sacrificed by use of the sword, which then transfers it powers to its new wielder. It was later discovered that the sword was cursed, and that the only way for it to retain its power was to regularly slay "evil-doers".
The clan has had several clashes with other characters of Tekken, such as the Mishima Zaibatsu, Ganryu and most notably Bryan Fury, who single handedly almost terminated the entire clan.