Witch-king Of Angmar

So you're a king of men, just ruling and being all kingly and stuff. And this dude shows up with a really nice, shiny ring for you. Of course you take it right? Well, if it turns out it's a ring of power, and the dude that gave it to you was the dark lord of Mordor (and he has his own ring that sorta controls yours), and now you're destined to be a ringwraith. but hey, at least you're the leader right? And then a brick artist named nameless_member builds a nifty MOC of your helm, so you have that going for you.

Witchking

Wraiths On Treads

Here's a thing of nightmares, or maybe a nerdgasmic mashup, up to you. Builder Chris Darmawan dared to imagine what the Nazgul would do with a little military upgrade, and I have to say it would be terrifying to see this roaring at you across the rocky plains of Mordor. It's like Batman and the Witch King got together and spent a little time in the garage. 

When Nazgul have a tank

Oh and if it wasn't cool enough standing still, it's motorized!