The Orks, also called Greenskins, are a savage, warlike, green-skinned race of humanoids who are spread all across the Milky Way Galaxy.
They share many features with Warhammer Fantasy Orcs (and were initially called Space Orcs to distinguish them).
They are seen by their enemies (pretty much everyone else in the galaxy) as savage, warlike, and crude, but they are the most successful species in the whole galaxy,
outnumbering possibly every other intelligent race, even Mankind (with the very plausible exception of the Tyranids, who are split between thousands of subspecies genetically
engineered for specific purposes). However, this massive population of Orks is split into hundreds of tiny empires, often warring between themselves.
It has been speculated that, were the Orks ever to unite as a single racial entity, they would undoubtedly crush any opposition that would stand against this sheer tsunami of green muscle.
Luckily, the Orks enjoy killing each other every bit as much as they savour shedding the blood of the galaxy's other peoples.