The Sunblitz Brotherhood is a group of Aeldari Corsairs believed by the Inquisition's Ordo Xenos to currently be allied with the Craftworld Alaitoc, though they have also been known to closely associate with Craftworld Lugganath.
Comparisons have been drawn between that Craftworld's own colours and the fiery orange of the Corsairs of the Sunblitz Brotherhood. Whether this similarity is a coincidence or an indication of some deeper connection between the two factions is open to speculation.
The Brotherhood took part in the Aeldari's invasion of the Imperial Mining World of Betalis III alongside the forces of Alaitoc, Craftworld Mymeara, and two other Corsair bands, including the Void Dragons and Sun Raiders. Imperial intelligence indicates that the Brotherhood has a tense relationship, if not an outright feud, with the Void Dragons. During the Betalis III Campaign it is possible that the fleets of the Sunblitz Brotherhood and the Void Dragons assaulted each other.
- Imperial Armour Volume Eleven - The Doom of Mymeara (Forge World), pp. 149-153