Sample (Zero): https://drive.google.com/open?id=1X8dKD ... ML6AE91T_N
I've been looking at accessing these for an animation project, however, so far I've not had any luck. I don't believe people have been looking at decrypting these either, as they are animation files.
I'm unsure which format actually holds the animations, so only one of these should be required. The models use the BRRES format, so I'm expecting the export to be readable/exportable in BrawlBox and BrresViewer. I've also included Zero's model file "0400.brres" and another file that was included in the folder "0401.brres" however this is just Zero's facial textures.