This undead Templar was one that I made as part of a series of Templars that I sold.
You can read this character's story on my Instagram page.
The base of this is a combination of a skeleton legion builder and a Templar legion builder. I dirtied up his armor and tunic and also sliced out some holes in the loin cloth piece. I also slided once of his armor pauldrons to add some variety to the design. Finally, I painted a red cross on his skeleton head to identify him as a member of this Templar order.