Hi Hakon,
er..
Hmm. I almost said the Barrow Wight earlier. - no
Maybe it is the Witch King, - no
no he is not weak same with Sauron. -you are correct, it's not Sauron either
Is it Tom Bombadil? - no
I thought of him earlier but he does not lack life nor is he weak. - quite
Hmmm. Is it Aragorn - no
or Gandalf? -no
There you go, six for the price of one
The answer is an obscure one, in no way a major character,
Happy riddling....
R