The Ice-Biter Tribe is a tribe of rieklings found inside Cragwallow Cave. During the celebration at Cragwallow, the lute that Valding the Bard plays will attract the rieklings, resulting in the death of multiple workers.
The Imperial Legion is the main army of the Empire of Cyrodiil, or what remains of it. They are loyal to the one who sits on the Ruby Throne, which is currently Clivia Tharn, though Mannimarco is secretly the one from which their orders come. Another Tharn, Septima, is the Magus-General of the Imperial forces near High Rock.
During the Interregnum, the Empire fell into disarray and the Imperial Legion gradually lost control of its provinces. As a result, a large Imperial military presence can only be found in various camps throughout Cyrodiil.
The Iron Orcs are an isolated Orcish civilization native to the Dragontail Mountains of Craglorn. They are known for their stone worship and their savage brutality, and are based in the Nordic ruins of the Valley of Scars. They tame Welwas and Trolls as war beasts, and primarily use iron arms and armor. They are culturally separate from other Orcs, and possess their own language.