[Endoperez]

Not sure. It's a simple mod, so it should be easily done. You just need to find suitable graphics for Templar Guardian and Templar Lord. I suggest Eternal Knights or whatever the ethereal knights recruitable from the Tower of Nexus are called. They're usually never seen without etherealness.

I'd also use just Templar, Knight Templar or Templar Knight, OR Temple Guardian, as a name for what you call Templar Guardian.Just a matter of taste.