artemisia (pixiv fantasia)

A pixiv fantasia character frequently drawn by artist edobox. Common features include pointy ears, short silver to light blue hair, gauntlets, and her signature large greatsword. She usually wears a single pauldron on her right shoulder when armed.

Formally her name is Artemisia (アルテミシア) on pixiv tags, though edobox commonly refers to her as Ar-tan (アルたん).