Созданы при Руссе еще. Некоторые полагают, что именно он помог им сбежать.
"The Wolf Brothers"In the aftermath of the Horus Heresy the Space Marine Legions were broken
down into smaller formations known as Chapters, so that no-one could ever
again hold power over an entire Legion. Some of the Legions divided many
times and spawned many successors, while the Space Wolves divided only
once. Their sole successor Chapter, named the Wolf Brothers, was forged
during the Second Founding. It was the dream of the Primarch Leman Russ
that the Wolf Brothers would be the first in a series of Chapters drawn from
his genetic ancestry, and the Space Wolves, along with their successors,
would create a cordon around the Eye of Terror to shield against futureattacks from the Traitor Legions.
Tragically, the gene-seed of the Wolf Brothers was fatally flawed, leading to
the manifestation of large numbers of Wulfen and other, more terrible,
abominations within their ranks. Shortly after their creation the Chapter
was disbanded by the Ordo Astartes, its stores of gene-seed destroyed and its
surviving battle-brothers given the choice between a death in glorious battle
or a shameful execution. However, before the Ordo Astartes’ orders could be
fully carried out much of the Chapter disappeared, the Wolf Brothers
vanishing into the depths of space. Some within the Adeptus Terra accused
Leman Russ of warning the successor Chapter or even aiding their escape,
though no proof was ever uncovered. To this day rumours persist of small
bands of Wolf Brothers fighting with Renegade Chapters or living as pariahs
in the shadow of the Eye of Terror.