Burg is a Devaronian mercenary played by Clancy Brown, part of Ranzar Malk's crew in The Mandalorian. He is the heavy: physically the largest person in every room he enters, contemptuous of Mandalorian armour, and openly interested in finding out what is under the helmet.
The episode uses him to establish the show's combat grammar — that Din Djarin wins fights through equipment, positioning and patience rather than strength, and that the biggest man in the corridor is usually the first one dealt with.
Catalogue entry. This figure has a verified record here rather than a full write-up — the encyclopedia labels its own depth instead of padding it.