Yshimitsu is from a long line of warriors to took up the sword and the name of Yoshimitsu.
In 1998 he was a secret character in Namco's Soul series. Yoshimitsu changes his appearance during each tournament.
Yoshimitsu enters the first tournament (tekken 1) as a decoy, so that other members of the Manji Party he leads can steal the tournament's money without being dedtected. Yoshimitsu learns about a sumo wrestler called Ganryu, who he then defeats. When the tournament is over, Yoshimitsu begins an attack on Dr. Boskonovitch's lab in order to steal his Eternal Energy device. During this attack Yoshimitsu loses his arm, Boskonovitch helps him escape and fits him with a mechanical prosthetic arm, putting Boskonovitch in his debt.