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 Prucine 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.

Ulog joined the party on both heists: Lord Sutan's house and the High Rechtor's home. On the first heist he was quite a help for the group, disarming traps and helping Nott. He was there when the party fought the Rug of Smothering, but didn't do much in the fight.

At the High Rechtor's home however, he was more reckless, as he immidately ran off, trying to find any documents regarding his wife's case. When he managed to find a parchment he learned that the accusation was indeed false and that Prucine wanted to make an example out of Iliana.

This made the dwarf furious and when the High Recthor cought them in her bedroom, salvaging trought her belongings, he handed the parchment, proving his wife's innocence to Caleb then launched himself into Prucine, detonating a fireball in the process, killing them both, and causing a fire in the manor.

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