Surtalogi

Gender: Male
Region: Khaenri'ah
Affiliations: Cosmic Calamity, Eclipse Dynasty (formerly), Five Sinners of Khaenri'ah

Surtalogi, also known as The Foul, is one of the Five Sinners of Khaenri'ah. He is Skirk's master and the owner of the All-Devouring Narwhal.

Surtalogi is able to take on any form he desires. While traveling across the stars, he usually assumes the form of a humanoid wearing Abyssal armor and wields a claymore-like weapon. Those who long for his level of power may instinctively attempt to imitate his appearance as a representation of ultimate power. This includes the Dark Shadow of the All-Devouring Narwhal and Skofnungr.

(Source: Genshin Impact Wiki)