Mokujin is the Tekken 3 fighter who appears as a wooden training dummy that imitates other characters’ moves.
In the series’ story, Mokujin is made from a 2,000-year-old tree and comes to life when powerful evil threatens the world. His mimicry is reflected directly in gameplay: rather than having a fixed fighting style, he copies the moveset of another fighter, with the style changing between rounds.
Mokujin awakens in Tekken 3 after Ogre, the God of Fighting, is released. Once Jin Kazama defeats True Ogre, Mokujin becomes lifeless again. He later reawakens in Tekken 5 because of Jinpachi Mishima and in Tekken 6 because of Azazel.
A common mix-up is Tetsujin, a similar character introduced in Tekken Tag Tournament. Tetsujin is metallic, while Mokujin is wooden. Yoshimitsu is a human-like ninja character, Combot is a robot with copying abilities, and Ogre is the supernatural threat whose arrival awakens Mokujin.