Be aware that these characters were console-exclusive and do not exist in the arcade version of Tekken 3, regardless of your NVRAM file.
For emulating the arcade version of (Namco System 12), the NVRAM file is critical because it stores the cabinet's settings, including time-released character unlocks. Why You Need a Specific NVRAM File tekken 3 nvram
: It bypasses the "time-release" system of the original arcade machines, which required hundreds of hours of operation to unlock secret characters. : In MAME, the file is typically named and is located in the nvram/tekken3 Be aware that these characters were console-exclusive and