Description from original post (created 2012-03-11 00:57):
Since I went through all the trouble to make these mob skins for my Portal texture packs, I might as well modify them so players can use them as well. Just keep in mind that the packs can use transparencies--players can't. As such, the areas that would normally be transparent have been filled.
Defective Turret: "You should just lie down in front of a rocket. Trust me, it'll be a lot less painful than the neurotoxin."
The other Portal skins are available through here: Chell