Under The War of the Ring rule system, forces of Mordor are able to have undead Ghostly Legions. As these seemed completely appropriate to an army of the Necromancer, I of course had to have a small force of them.
I plan on having an Army of the Dead serving my Good forces eventually so I wanted these to stand out and not use the same models. Instead, I took my inspiration from where the Necromancer would most likely collect the spirits that will serve him. My Ghostly Legion therefore is mostly made up of Men (primarily Rohan with some Gondorians), Orcs and Goblins.
Their Captain happens to be a certain Captain of Gondor that fell to Uruk arrows. You can see him in a couple shots from one of my War of the Ring games, but I will have to post better pics here when I get my models out again. I used the plastic Boromir from the Mines of Moria set with just a little modifications and am proud and amused by the results.