Okay, let me explain a little better.
The normal player models (the one in your OP and up for download at The Models Resource
) are the only ones used in the PC version. They're used in game play, on the player select screen, on the results screen, and in the credits. (For the record, that's all the places a character model is shown. Although I'm not sure about the time trial records screen.)
The ones I just ripped are also from the PC version (sorry, don't know how to rip the Saturn models), but they are unused. These models are stored with the models used in the menu (ex: the GP icons, the course previews, etc.) in the file /bin/option/option3.bin. (It's actually a level geometry file, weirdly enough.)
I'm assuming that these are copies of the ones used in the Saturn version for the results screen and possibly the character select screen as well. (I'm not certain if they're the same as the one used in the Saturn version's gameplay, though.)
These results screen models seem to be earlier versions of the ones used in-game, as some things are different. (Especially Knuckles. Poor guy.)
Also, about the eyes, couple things to point out. For one, even in that Saturn screenshot the eyes were lopsided. Weird.
Secondly, Tails' eyes are never displayed that way in game. Before rendering the game overwrites the textures on the "eye faces" with either open or closed eyes, depending on whether or not the character is blinking. This means that it's totally irrelevant what's on those faces as they're going to get overwritten regardless. I suppose the modelers either didn't know or didn't care that the top half of Tails' eyes were missing, as ultimately it didn't matter. (This texture goof is present in the actual in-game model as well. I just manually corrected it in my dump.)
: You can see the eye texture process in action with my custom Amy model from forever ago.
Notice how Amy (replacing Sonic) has Sonic's eye texture on her left glove, replacing the usual white.
: Fixed some awkward phrasing.
This post has been edited by InvisibleUp: 17 December 2016 - 02:52 PM