Stay down, downloading hand!
http://www.nintendoworldreport.com/news/45694/fire-emblem-warriors-reveals-dlc-plans
The eShops have solved the mystery of who will represent Fire Emblem Warriors in its DLC.
The season pass listing on the eShop has listed the following characters in each pack:
Four of the characters have a minor presence in the base game: Niles, Oboro, Navarre, and Owain. Azura would mark the first non-flying lance unit playable (along with Oboro), while Tharja was the third most popular female character in the January "Choose Your Legends" poll taken in the lead up to Fire Emblem Heroes.
