King (キング Kingu?) is a title that two characters have taken in the Tekken series. Even though there have been two characters who have taken the name, each is simply called King in their respective games, though a numerical value is sometimes given to them to separate them as different characters. Both King I and King II are luchadores from Mexico who support orphans across the world. In the games, they are never seen without their jaguar masks (except on a single occasion).

There has been a King in every game in the Tekken series, and this, along with his unique appearance and trademark "point", has made him one of the most recognizable characters not only in the series but also in the fighting game genre. The second King was a street urchin who was brought up in the first King's orphanage. Until the age of 24, this person worked hard with King until, one day, news broke of the first King's death at the hands of Ogre.

Seeing that the orphanage would crumble into ruin (the money gained from King's wrestling matches was the only funding received), this man donned the mask of King and imitated his style. Unfortunately, he had only seen King's wrestling moves as a child, and he lost every competition he entered. One day, however, another man with a mask visited the new King, introducing himself as an old friend.

This man revealed himself to be Armor King, who was interested in finding out if the rumors of a new King were true. For four years, the two of them trained, and the new King learned quickly, maturing into a forceful wrestler with extreme power, known as King II. By this time, the now 28-year-old wrestler was a worthy heir to the throne. King is not only a masked professional wrestler, but also the proud owner of an orphanage. Recently, King's sworn friend and comrade, Craig Marduk, as well as the man King thought to be his still alive master who is later revealed to be his younger brother, both engaged in a bloody fight which left them with critical injuries.

King desperately wanted to come to his friends' rescue, but knew that their operations wouldn't come cheap. At the same time, King's orphanage was in constant danger owing to the war that raged between G Corporation and the Mishima Zaibatsu. By the time Marduk recovered before the younger Armor King did, just as he was about to finish him, King stopped him from doing so, reminding him the day King redeemed him.

The friendship they forged means they can still make peace with Armor King II, Marduk's murderous intent being the same mistake King had done with the formerly injured Vale Tudo fighter back after the end of the fourth tournament. To avoid bloodshed, King suggested Marduk to write Armor King II a letter challenging him to a retirement match, where the loser would have stopped fighting for good, and the latter accepted.

Finding himself caught between a rock and a hard place, King entered the King of Iron Fist Tournament 7 with his eyes set firmly on the cash prize. Ending Description: Jack-7 is seemingly defeated, but he gets up and tells King that all of his moves have now been analyzed, to which King is shocked. King tries to attack Jack-7, but he is unable to touch the machine.

Then, King has an idea on how to defeat the robot: he then proceeds to enter Marduk's "Ready Position", tackle Jack-7 and perform the "Melon Masher". While Jack is able to knock King back, King retaliates with Armor King's "Round Out Elbow", finally defeating Jack-7 and becoming victorious.