Quote Originally Posted by Beetle View Post
If you recall the storyline Nero tol Scaeva dies at end of 2.0... GUESS NOT
You must have skipped that cutscene,
because it is very clear that Nero escapes after you defeat him in the Praetorium.
Gaius on the other hand, there's some pretty interesting theories in another thread about the Eorzea/FFXIV Lore.