Arthenax (concept)
Arthenax was a Dragon that lived from an unknown date until 439 IS when she was killed at the hands of Aautokratia Aeliadias, she is commonly accepted to have been the last of her kind.
Arthenax invaded Aversaria from the northeast in 421 IS, over 200 years after dragons had thought to have been exterminated by the Aversarians. She, along with her four children (the dragons Iluthunax, Parthagad, Olaxanat and Kutharax) proceeded to scour much of Aversaria, exacting tribute from local lords of wantonly slaughtering entire cities as they saw fit.
Arthenax slew the entirety of over six Aversarian Legions and over two hundred Magi who attempted to stop her before finally being confronted by Aautokratia Aeliadias in a legendary duel in southern Opakhasia. Aeliadias proved herself the strongest Magi of a generation in killing the beast and her children. The magical flames conjured by Aeliadias were so powerful that Arthenax was burned away until her bones turned into blackened stone, and her remains still remain where they fell so long ago. While Arthenax is considered the last living dragon, it is unknown from where she came from, and the believed extinction is only due to the lack of verifiable reports of other dragons since.