needing my project to use a 3d model/animetion file format unity dont support

hi im needing to make my game to use unsupported 3d model/animetion formats the game i am making is Super Smash bros for unity and the progress is going good so far(right now only a box as a playeble character and a flat stage) but i wanted to have good animetions and models for my game and also since i have some plans for my game like a custom stage/character editor so the SSBUnity will be like as Mugen is for 2d fighting games and since i have made alot of mods(model imports,movesets) for SSBbrawl to the wii and SSBbrawl already have a program to Convert models to Brawl´s file format, edit they´s material, normals,boneset,shaders and edit/make animetions for them

why not make the game to be able to use Super Smash bros brawl file formats since of alot of mods have already been made,a editor is already been made too the editor also have a dll and open source(if that can be used to get unity to use these file formats) and here is the files i wanted to be used for my SSB engine: .pac: a pack file where .brres files for model or textures or animetions is inside .Brres: also a pack file where anything is inside model or textures or animetions .Mld0: the model file format .chr0: the animetion for the model .vis0: to hide/show polygons like damage face or blinking or other stuff, needing to be named same as the chr0 to work with the chr0 file) .srt0: texture animetions like moving eyes also needed to be same name as the chr0 to work with the model animetion .pat0: to hide/show textures like damage face or blinking or other stuff if done with texture and again needs to be same name as the .chr0

it is not possible to convert the animetions files yet and i dont think it will be(until the maker of that SSBbrawl editor: Brawlbox is doing a animetion converter) and brawlbox writing in c# too but it is with the models but a other problem with that if convert the mld0 model to and import it to 3ds max it will lose all materials and shaders so if the model in SSBbrawl have some kinda of shine effect it will be gone and you will have to redo it

so wanted to know if it is possible to make unity to use these file format(they are mainly used for the wii) and if it is i wanted to know how to make it possible

it will be a fan made game not one where i make money off
so it is as legal as if someone make a mario game in unity and using a model of mario from a mario game

ps. sorry for my bad english but not judge me cuz of that i still knows to programming/3d modeling and animetions and alittle to unity(not the best but i know how to still)

Easiest thing to do is to write a converter that loads the SSB files and writes them out into formats that Unity can read.

that has already been done(for models not animetions)
but the problem is they lose all effects like shine effects
like take sonic in brawl for a example

if you see the brawl sonic model used in a Movie or a game mod like as here:
http://tinyurl.com/c36hmje
so he dont look like as in SSBB like as here:
http://www.smashbros.com/en_us/characters/images/sonic/sonic_071010c-l.jpg
since if you convert the model
the model lose all that stuff as shine effects or other stuff like the moving eyes (by texture animetion)
thats the problem with converting the models they lose any of these shaders/normals/materials afew more stuff

and for animetions i dont think it will be possible to convert all of these kind animetion files