The ogres. Creatures of the wild - or so would they have you believe.
These green-skinned giants have been already roaming the snowy plains
of Brutang for millennia before the Orcs made their appearance.
The ogres are strong and know how to fight for sure, but their smaller
numbers and lack of metal weaponry was what ultimately doomed them to
servitude to the Orcs. It was foregone conclusion that they would be
overwhelmed by the much better-equipped and more agile, more nimble
Orcs, whose whole culture was geared towards warfare - especially
offensive warfare - in sharp contrast with the surprisingly (at the time) pacifistic ogres.
So would come centuries of servitude - ogres would be forced to serve
their orcish overlords as both slaves and soldiers, abandon their
ancestral fate and their own language in favor of what the Orcs forced
upon them. Ogre culture has died, replaced by either slavery or (for the free Ogres) Orcish culture
with maybe a few hints of Ogre influence.
Time has passed, and relations between Ogres and Orcs have became more
relaxed. While the notorious Bru'k clan continues to enslave the Ogres,
all the other three Orcish Tribes have embraced emancipation the Ogres, treating
them as equal members of the tribe.