gametitle=Tekken Tag Tournament (USA)
Some characters are accessible immediately by pressing specific buttons on existing roster icons: Tiger Jackson Eddy Gordo and press the buttons (X or O on a standard controller). and press the in PCSX2 to load these save files?
Use a wired USB controller; fighting games are notorious for input lag on Bluetooth connections.
Unknown: To play as the final boss in the PS2/PC version, you simply need to finish Arcade Mode with all other characters unlocked. She will appear at the bottom of the screen.