Tobal took 3D fighting to an interesting place
The introduction of a quest mode into a fighting game was revolutionary. Soul Blade (1st Soul Calibur) wasn't even out at this point and probably took a few cues from Tobal. In quest mode, you headed into dungeons attempting to advance your character similar to an RPG. I never finished it but assumed it was pretty extensive.
The second Tobal never saw release in America but was said to have 1000's of unlockable characters in quest mode.
Tobal had its flaws and they may be blatant today, but the innovations can't be denied.