Ulog

 was a dwarven member of The Knights of Requital. As an NPC he was played by Matthew Mercer.

Background
Ulog claimed that his wife Iliana was arrested six months ago while shopping in the Pentamarket. Two bandits involved in a stabbing ran into her, casting suspicion on Iliana in addition to the bandits. In his story, the High Richter sentenced her to 20 years in the Umber Dungeon without a trial.

Having tailed the Mighty Nein and seeing their skills, he later approached Beau and Fjord to attend a meeting at midnight of the 5th of Fessuran 826 P.D. . He wanted to recruit the group in to helping the Knights of Requital in a mission to removing a few cancerous members, within the protective Empire, that had been abusing and corrupting the system.

Trivia
On Talks Machina, Travis theorized that Ulog was a double agent working for the Crownsguard.