Where are the named characters in the Storm King’s Thunder minis from?

@JeremyECrawford @ChrisPerkinsDnD @mikemearls where are the named characters in the SKT minis from? Alphelandra,Ungart,Antolio,Nostrum,Thann

— 💀Zeroun Blue💀 (@ZerounTheQuick) September 30, 2016

They are a gang of giant hunters we created as part of the art concept process. No stats yet. #wotcstaff https://t.co/8mNIoOGubM

— (((Mike Mearls))) (@mikemearls) October 1, 2016

@ToraPantheraThann, as in of the Waterdavian Noble House Thann? don't think so – coincidence #WotCStaff

— (((Mike Mearls))) (@mikemearls) October 1, 2016