Tajik
From Warhammer 40k - Lexicanum
The Tajik was a System Runner that was used by the White Scars Legion, during the Horus Heresy.[1]
History
Though he was a guest of the White Scars, and was asked to join them in the aftermath of the Heresy's Second Battle of Prospero, the Thousand Son Librarian Revuel Arvida thought of using the Tajik to escape from their fleet. However, Arvida would ultimately decide to remain with the White Scars.[1]