Neethmarin is an Argonian scholar that you can recruit after doing a small job for him outside Markarth. This mod hosts not only him as a follower, but 3 minor NPCs as well! All of the characters in this mod are fully voiced by human beings with over 3,000+ lines collectively. 

He is also... on Xbox!

https://creations.bethesda.net/en/skyrim/details/6f4b01ff-5991-42cc-a976-51f5073054b7/NEETHMARIN___An_Argonian_Scholar_Follower_Mod__XBO