Re: Which versions of aliens do you imagine?
Tellarties: ENT -- but that's because that's my only remembered exposure to them and don't know what they looked like elsewhere.
Scroll down to the "Tellarite" section and I think you'll see why it's better to picture ENT Tellarites.
"Every line of serious work that I have written since 1936 has been written, directly or indirectly, against totalitarianism and for democratic Socialism, as I understand it." - George Orwell, 1946