Yoshimitsu (吉光?) is a fictional character who was first introduced in the original Tekken game and has returned for all subsequent sequels in the Tekken series (primarily in main series installments due to his absence in some spin-off installments, Tekken Revolution). Additionally, an analogous character bearing the same name, weapon, clan, and basic information was later carried over into Namco's Soul series of fighting games as a major character, making his debut in the second game of the series, Soulcalibur, and has returned for all of the series main installments.

Yoshimitsu's benevolence hasn't changed since the first Tekken Tournament. He enjoys helping people who are in need, as seen with Law and his family (Yoshimitsu's ending) in Tekken. He is also became the helper of Dr. Bosconovitch prior to Bryan's betrayal towards the Manji clan in Tekken 5. With Heihachi reinstated as the CEO of the Mishima Zaibatsu, Yoshimitsu sensed something bad was afoot, and so entered the King of Iron Fist Tournament as way of confirming his suspicions.

His infiltration point would be the Mishima dojo. It seemed like the perfect location for collecting intelligence, and even though the building would act as the arena for his tournament match, Yoshimitsu approached from the air just in case. When he entered the Mishima dojo, the place looked as though it had been hit by a typhoon. Waiting for Yoshimitsu in the gloom was a charming young martial artist. Yoshimitsu couldn't say for sure, but he thought he seemed a little "tense...".

Though his looks were enchanting, he also seemed dangerous, so Yoshimitsu braced himself for battle. Ending Description: After defeating Leo, Yoshimitsu ponders on Leo's incredible strength despite the delicate appearance. He suddenly realizes that Leo is not breathing and immediately performs CPR on top of Leo. When Leo wakes up and looks at Yoshimitsu's mask, Leo suddenly wails and squirms to get away. Yoshimitsu tries to hold Leo down, saying that Leo needs to rest, but Leo knee kicks him in the groin and knocks him out cold. As the ninja rolls off in pain, Leo quickly gets up and flees.