Board Thread:Roleplaying/@comment-24339224-20150816215930/@comment-1470368-20150817143436

The only thing canon about the Last Dragonborn is that he/she found out about being Dragonborn and went on to defeat Alduin, while possibly defeating Miraak later on as well. The Dawnguard version of that eponymous DLC's main quest may as well be canon too, because I highly doubt the world will be covered eternal darkness by the next game.

There's nothing canon established about any past Hero in main-series games regarding their sex or race, so the same ambiguity will follow for the Last Dragonborn.