K'Nib

"It cannot have escaped any of the Council's notice but we are still plagued by alien aggressors in the Donorian Sector (Segmentum Tempestus). These are believed to be of the same xeno-type as the invaders of Prospero Colony three decades ago! [I've included the only known holo-file of these aliens: it's the big furry thing with the claws] Why can these fell creatures not be dealt with? Why must the blood of innocent colonists continue to be spilt while we do nothing? How can we let the magnificent Palace of Caleb on Assumptus V serve as a barrack house to the festering soldiers of the K'Nib?"

- Erasmus Phramtle, Prefect of Soliden, City of Pyres, Danub, 334.445.M41

The K'Nib (sometimes spelled K'nib) are a xenos race of which almost nothing is known. According to Radical Inquisitor Maturin Ralei, who studied an artifact of unknown material and function related to this race, they have ten limbs.

History
There is speculation that they were one of the many potential warrior races nurtured by the Old Ones during their ancient war against the Necrons and their C'tan masters.

Imperial records make passing references to the "festering Clawed Fiends of K'Nib" as the "soldiers of the K'Nib", which implies this race uses the Clawed Fiends from the Donorian Sector of Segmentum Tempestus as shock troops in their campaigns in this region. For at least three decades they plagued this Sector, invading Imperial worlds such as Prospero Colony in 415.M41 and Assumptus V in 445.M41.

At some later point in M41, Imperial Navy Admiral Bregant de Corte fought the K'Nib, and his masterful strategy halted their invasion of the Sulacus Rim.