Board Thread:Lore Discussion/@comment-24.44.141.89-20131113224543/@comment-17114085-20150315131126

That is the most believed and likely theory. That the Tsaesci are the Snake-Men and that they conquered and likely enslaved the Akaviri Men. It is the only way to explain that the Dragonguard/Blades ghosts and the carvings in Sky Haven Temple are humans and not Snake-men.