I started working on this conversion today.  I was too excited to not assemble him immediately.  I also regret this immediately.  

His name is Morkhead.  I added a skull mask and two extra pieces of cloth.  This is Morkhead after the first yellow glaze.  I'll build up the yellow and do a layer then highlight.  I think I will paint the skull and smoke green to show his proximity to gorkamorka and the waaagh.  But he may look like a greenbay packer.