Skirk is a swordswoman who resides deep within the Abyssal Plane, a place separate to the world of Teyvat. Few know of her existence, and even fewer of her monstrous strength and skill. 

She is the apprentice of the mysterious Surtalogi "The Foul". She is also the master of the Fatui Harbinger, Childe "Tartaglia".

Skirk ignores the weak and acknowledges only those who have proven their prowess. She reveals very little about herself, and mostly speaks in riddles. She is completely stone-faced.