Angels of Ulan

introduction-The Angels of Ulan are one of the twenty space marine chapters that have sworn to defend Segmentum

Pios from xenos and whatever lies beyond the segmentum. they have been defending the segmentum since the discovery of their primarch and were one of the governing chapters of the system second only to the Iron claws chapter who also fight to protect Pios from th threats that come from beyond the border. the Angels of Ulan are derived from the gene stock of the IX legion. these Son 's of Sanguinius are surprisingly unaffected by the black rage and red thirst which baffled the other successor chapters of the IX into thing that the Angels of Ulan had discovered a cure but in reality they have not. The only way the Angels of Ulan could control their flaws was to undergo a ritual that the chapter call'The Trials of Light'' the Trials of Light are similar to the Space wolves trials specifically the Gates of Morkai, that require an aspirant to enter the gates and to resist the temptations offered to them by the gods of chaos however, The Trials of Light have the aspirant stand In a ring in which happens to be a gate into the realm of chaos itself and later the heads of each gods lesser deamons to present to the chaplains, the aspirants while searching must resist the taunts and temptations offered and spoken by the inhabitants of that infernal realm. but the hardest temptation is that of the Blood God, who constantly taunts and temps the aspirants to give themselves over to him, in exchange he would make them the perfect warrior and deamonhood, many have fallen to these temptations and offerings and end up trapped within the realm of chaos, bound to whichever god they chose to follow and worship. but those who survive and complete their task make it out of the realm and back into real space and present their trophies to the chaplains, who in turn have them made into new Astartes to uphold and serve the chapter, these new Astartes are more resistant to both the Black rage and Red Thirst seeing them as temptations of Khorne resulting in them despising these flaws and ignoring them to the point that it never comes up.