From Warhammer 40k - Lexicanum
Their planetary holdings are on a hot world, that is often bathed in the effusions of its parent star. This has resulted in House Sulymanya's members having velvety black skin that is so dark, it appears to be blue in gentler lighting.
- Yassilli Sulymanya - She was nearly killed, for not believing the Emperor is a God. Even House Sulymanyan's influence was not enough to save Yassilli and it took a direct intervention by Lord Commander Guilliman to spare her life.