The Dark Blaze Sect was founded by the Evil God of Dark Flames, Phantro. He mated with a human, thus creating a slightly malformed and rather infamous lineage. The reputation of the Dark Blaze Sect was rock bottom during the second and third eras, and despite being decently strong in terms of manpower and cultivation techniques, they were regarded as spawn of Phantro.
Slowly but surely, the prejudice disappeared and the sect rose to prominence, becoming one of the highly-distinguished powers in the Cloud Sea Universe, though it fell short in comparison to the clans and sects in the Divine Planets, or even a handful of others all around the universe. Still, every Patriarch that took over the sect was always an Exalted God, which solidified their position and reputation, as well as drive some rogue but talented cultivators and explorers to seek refuge and knowledge in the Dark Blaze High-Realm.