[One, Two, Middlesboogie]

I think I remember Alf saying something about this on Oddworld.com. He said that In AE and AO, Sligs can tell which of their comrades are possessed because the possessed ones have a really glazed, vacant look. In MO, however, Abe's possession skills have improved, so a possessed Slig will look normal and be able to walk undetected amongst non-possessed Sligs.