While I was going through the KotOR texture packs, I ran across a texture that I hadn't noticed or payed any attention to.
Kotor 1/ERFs/TexturePacks/swpc_tex_tpa/N_alien03_low.tpc.
At first, I thought I was looking at the TSL section, but I came to discover that this creature was (as far as I can tell) completely cut from the game. However, the model and the texture survived, and so did a line in appearance.2da. If you change all the model fields for line 328 to L_Alien03, and all the texture fields for the same line to N_alien03_low, you can have this little guy in-game:
http://i269.photobucket.com/albums/jj73/Sithspecter/little_guy.jpg)
He uses the same animations as a Jawa, so he's not really usable as PC, but certainly usable for mods. ;)