Naruto Shippuden Ultimate Ninja Storm (1, 2, Generations, 3, Revolution)
The games mantained a similar format over the time.
Basically, the models are packed in .cpk files, which can be extracted using cpk_unpack: http://forum.xentax.com/viewtopic.php?f=10&t=10082.
For some reasons, some poeple can't unpack the Revolution files using cpk_unpack, if you are in this case try this one: https://mega.co.nz/#!MoFhGDYL!xtLXHfYkzuAYK6XQWX_JyJH5iRdXLs71JL4pS5jTzEI.
To use the 2nd tool, copy the .cpk you want to unpack in the directory of the tool and launch 1-EXTRACT_ALL(no_decompression).bat, wait 'till it ends and launch 2-Decompress.bat.
After having unpacked the .cpk, you'll have some folders full of .xfbin files, some of them are the models!
Noesis supports the .xfbin format, but some of them are encrypted, so I suggest to try to open the .xfbin with noesis, if it opens correctly the file wasn't encrypted and you have the model, if Noesis asks to unpack something, cancel and use cpk_unpack again on the xfbin file, you'll obtain a .out.xfbin that can be opened with Noesis.
If Noesis fails to open the .xfbin without asking to unpack that means that the file you're trying to open isn't a 3d model or it isn't supported. In that cases there's no way to open them!
For some reasons the stage.cpk of NUNS3 can't be unpacked.