[ Tekken 4

Play as Eddy Gordo
Successfully complete the game in story mode with Christie Monteiro. Then, highlight Christie and press RP (Triangle) at the character selection screen. Eddy Gordo plays exactly like Christie.

Play as Miharu
Successfully complete the game in story mode with Ling Xiaoyu . Then, highlight Ling Xiaoyu and press RK (Circle) at the character selection screen. Miharu looks like Ling in her schoolgirl outfit from Tekken 3 and Tekken Tag Tournament and plays just like her.

Play as Ling Xiaoyu in school uniform
Successfully complete the game in story mode with Ling Xiaoyu. Then, highlight Ling Xiaoyu and press RP (Triangle) at the character selection screen.

Play as Panda
Highlight Kuma at the character selection screen, then press RP (Triangle) or RK (Circle).

Play as Violet
Highlight Lee at the character selection screen, then press RK (Circle).

Dojo stage
Successfully complete the game in Tekken Force mode to unlock the Dojo stage.

Theater mode
Successfully complete the game in story mode to unlock theater mode.

Ranking password
Successfully complete Time Attack, Survival, Tekken Force, or Training mode. Hold Square + Triangle and press Up/Right to display a password that corresponds to your rank.

Alternate victory pose
After winning the final round in a match, hold Square, X, Circle, or Triangle during the replay to view a different ending pose for each button.

View move names
During a match, press Select, then enter a combo to see its name.

All characters
Successfully complete the game with the indicated character to unlock the corresponding fighter:

Hwoarang to unlock Jin Kazama
Christy to unlock Eddy Gordo
Xiaoyou to unlock Kuma/Panda (Miharu is also selectable)
Yoshimitsu to unlock Brian Fury
Bryan to unlock Violet, if Jin is already unlocked; otherwise, Jin
Violet to unlock Combot (and Violet can now be Lee)
Kazuya to unlock Nina
Nina to unlock Lei
Marduk, Paul, or Law to unlock Hiehachi (unless all others are unlocked, in which case anyone unlocks him)