Loki is a character in the anime The Most Notorious Talker Runs the World's Greatest Clan. He serves as the most well-informed information broker in the Imperial Capital, a role that places him at the center of the city's underground intelligence network. His primary occupation is that of an informant, gathering and selling information on a wide range of subjects. He frequently deals with the protagonist, Noel Stollen, who is his best and most reliable customer. On occasion, Loki provides Noel with extra information free of charge, suggesting a degree of trust or favor between them.

Loki's class is that of an Imitator, a rare ability that allows him to morph into other people. This shape-shifting capability is described as an ultimate tool for disguise, enabling him to assume any form he chooses. This ability makes him a key asset for intelligence work, as he can infiltrate, observe, and gather information without being detected. His Imitator class also includes other related abilities that enhance his infiltration and espionage capabilities. Because of his shape-shifting nature, he is often referred to by the alias Faceless.

In the story, Loki acts as a crucial supplier of intelligence for Noel's ambitions. He provides the information Noel needs to navigate the dangerous world of Seekers and build his clan. Their relationship is professional but marked by mutual benefit: Loki gains a steady customer and sometimes acts out of goodwill, while Noel receives vital data that helps him advance his own plans. Further details about Loki's background, personal motivations, or character development are not provided in the available material. His personality is conveyed indirectly through his role as a reliable, well-connected broker who operates with skill and subtlety, using his unique abilities to maintain his position as the empire's top information dealer.