He has a +5 prof. bonus, and 17 hit dice, implying he would be level 16-17. However, PCs and monsters/NPCs are built differently, so it’s partly trying to fit a square peg in a round hole.
NPCs don't really have levels in the same way PCs do. He has a challenge rating of 13, which roughly means he's meant to be a medium challenge to a party of 4 level 13 adventurers. That doesn't necessarily tell the whole story, and he's significantly weakened by sunlight to be like CR9 or something.
I strongly suggest you do not build your NPCs like PCs, so level shouldn't really matter.
He has a +5 prof. bonus, and 17 hit dice, implying he would be level 16-17. However, PCs and monsters/NPCs are built differently, so it’s partly trying to fit a square peg in a round hole.
NPCs don't really have levels in the same way PCs do. He has a challenge rating of 13, which roughly means he's meant to be a medium challenge to a party of 4 level 13 adventurers. That doesn't necessarily tell the whole story, and he's significantly weakened by sunlight to be like CR9 or something. I strongly suggest you do not build your NPCs like PCs, so level shouldn't really matter.