here'd what the file root rough looks like
the character folder holds the character files, which are called DAT containing model and texture data, theres also a format called txg, which is just dds textures, of which looks like accessories, heres example, no clue what it is though, another one was just a pink heart
anyway i pulled alice's face texture out
then i added mario to it, and tried to re-insert it back into the game
i've been liking at xentax's wiki. and they've documented the format. and its been spoted on few other gasmes, one civilations 4(pc), WW2 raw(xbox), BLeach(PSP), but none of their extractors work.
turns out nothing happened. after deleting the entire chr the game played fine, plus there character still apeared the same. after further looking at the files, i notice there is a another chr folder inside that fpack folder. if i remeber right *.FPK is a gamecube compressed archive format. and since BloodyRoar Xtreme was orginally on the gamecube, its not hard to imagine that, the xbox has adapted this format, and indeed its reading the character textures from the fpk instead of the .dat's i found in the other chr folder.
i found a FPK extractor, but it doesn't reconize the format of course. Useless!
if anyone with coding experience has the game plz take alook into the format for me. i can't make heads of tails of it.