If you are using a physical console with a cheat device like , you can use specific master codes to force the roster open.
Max Drive save files on sites like GameFAQs provide 100% completion, unlocking all characters. MAME (Arcade Emulator):
Automatically unlocks once you have unlocked . 4. Important Technical Note Tekken Tag Tournament Cheats For PlayStation 2 - GameSpot
If you have the original hardware, using an Action Replay MAX disc and entering the master code FYCE-MAFU-UR211 can unlock everything instantly. Helpful Secrets & Shortcuts
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