It's easy, you go on tekken force mode and select any character. you have four stages to complete, in each level you get a key. In the fourth stage, at the end you fight hehachi and if you beat him, you will be taken underground to save doctor bosconovitch by fighting him.
then it will say, .... you have completed tekken force etc and then when you go back onto the front screen you can play on any stages, arcade, vs etc and he won't be seen but you have to go on jin, click the right side key and there will be gon, click right side key again and it will show doc b and you have him.
in quick mode, on the options for arcade, he will be shown and so will gon
You can use Eddy Gordo, Tiger Jackson, Panda and Gun Jack
beat tekken force 4 tmes
you unlock jinpachi can in tekken 5 (dark resurrection) but in the normal tekken 5 you cannot unlock him.
In Tekken Force Mode, you can beat 4 times to unlock doctor b. For example: 1) Tekken 3 (Force Mode) Panda with Kuma Moves 2) Tekken 3 (Force Mode) Xiaoyu with Miharu Moves 3) Tekken 3 (Force Mode) Eddy with Tiger Moves 4) Tekken 3 (Force Mode) Yoshimitsu In Tekken Ball Mode, you can defeat with kuma.
Ogre was introduced in Tekken 3, and he returned into Tekken Tag Tournament, and Tekken Tag Tournament 2. Also, he was already unlocked in Tekken Tag 2.
play the game quickly
Armor King is not a playable character in tekken 5, but you can customize King II, but not in dark resurrection.
the last character you can unlock is doctor boskonovitch
You cannot unlock Devil Jin in Tekken Tag Tournament, the first appearance of Devil Jin is in Tekken 4, and the first time you can use him is in Tekken 5.
You can't play as Jinpachi in Tekken 5.
Play The Tekken Dojo in Normal Mode =]
Anna Williams is not a playable character in Tekken 4.
You can't unlock jinpachi in tekken 5. He's usable if you chance upon him picking random characters. He is unlockable in tekken 5 dark resurrection, though.
Complete Arcade Mode ten times to unlock True Ogre and Tekken Bowling Tournament.