It was a change of Kiith Siidims' theology that became one of the main triggers for the conflict that would last three centuries and brought the Kushan people to the brink of extinction.
Kiith Siidim is one of the Kiithid in BBIs Homeworld: Deserts of Kharak.
The origin of Kiith Siidim is unclear. No records of them exists prior to the settling of the northern polar region, and, unlike Kiith Sjet, do not have a valid claim to Khar-Toba.
In 462 KDS, the Siidim Council announced a change in its theology, from the traditional view that the Kushan were exiled from paradise to Kharak as punishment for the sin of arrogance, to the belief that only those within Kiith Siidim were of divine origin. According to the Siidim kiith-sa, all other kiith were natives to Kharak, and therefore inferior.
In accordance with this new theology, many new laws were passed to deprive non-Siidim clans of their rights and privileges. One such law was the ‘Clean Water Act’, that forbade non-Siidim from living upstream of water sources, as they would dirty the water that Siidim would have to drink. Such kiithid, or ‘Gritiidim’ as they were known, were force-marched downstream, carrying what little possessions they could. Among these were members of Kiith Paktu in 488, who would later start the mass migrations to the southern polar region as a result of the religious persecution.
This would not be the only despicable act the Siidim would commit.
Kiith Manaan, a traditional nomadic clan, had long been a thorn in the religious kiiths sides by their joyous and slightly less-than-noble attributes. Mannan held a celebration each year at the dancing grounds, Ferin Sha. In 513, with the Manaani having been accused of raiding a desert shore settlement, the Siidim marched down to Ferin Sha and butchered the celebrants, the few survivors escaping into the desert.
In revenge, the Manaan took up the sword and sail, and began raiding Siidim holdings along the desert shore. The old tales of Manaani pirates became a frightening reality.
By 656, the Manaan exhausted their thirst for revenge, and ceased their attacks, turning their fleet over to trade. By now the Heresy Wars were in full swing, and no doubt the Manaan raids caused much damage to a clan already fighting a major war.
The Heresy Wars themselves began in 520KDS, when the opposing religious opinions of Gaalsien and Siidim flared into open warfare. The resulting conflict would be the bloodiest in Kharaks’ history, with hundreds of thousands of kiithid displaced or killed, and almost lead to the Kushan people wiping themselves out.
During the conflict, both Siidim and Gaalsien demanded huge amounts of resources and manpower from vassal clans. This and the persecution of non-Gaalsien or Siidim resulted in the first crossings of the Great Banded Desert by Kiith Paktu, looking for new land in the south. Although both warring clans ignored the crossings for many years, the devastation of holdings caused by the war lead them to the decision to invade the southern lands to demand tribute and resources by those who they still considered their vassals. It is likely that Siidim launched one or more of the three crusades to take the southern lands, although only the Gaalsien armies arrived in the south intact, and even they were defeated by the southern kiithid.
In 810 KDS, the small but technologically superior Kiith Naabal emerged from their stronghold and entered the Heresy Wars. With their advanced technology and promises of peace, they quickly defeated the warring clans and brought the conflict to an end.
Kiith Siidim, like the Gaalsien were already on the brink of collapse by the time the Naabali appeared. By 1110 KDS they had recovered and were a significant member Kiith of the Coalition of Northern Kiithid, contributing greatly to the Kiith S'jet led expedition to discover the Khar-Toba. The Siidim carrier Sakala, captained by Mashad Siidim, was one of only two expedition carriers to escape the Gaalsien invasion of the North and worked in tandem with the S'jet carrier Kapisi to push toward their goal.
However, the Siidim had ulterior motives - despite feigning friendship and brotherhood with the other Kiithid of the Coalition they still believed themselves superior and believed that only the Siidim had the right to leave Kharak with the technology of the Khar-Toba. Proving just as zealous as the Gaalsien, the Siidim turned on the Kapisi, destroying at least one of its resupply landers and attempted to murder Rachel S'jet before she could uncover the secrets they sought for themselves. The Siidim attempted to renegotiate the terms of the Coalition, claiming that they would allow the allegedly inferior Kiithid to remain on Kharak in peace as they ascended to the stars. The S'jet carried out swift retribution for this betrayal and destroyed the Sakala, killing all the Siidim on board.
No further record seems to exist on the ultimate fate of the clan. Mashad Siidim's words seemed to suggest that all of Kiith Siidim was in on the plot to betray the rest of the Kushan, and they likely faced reprisals from the other Kiith following the failure of the Sakala's mission. There is no record of them being involved in the Mothership Project, nor of any Siidim being amongst the Sleepers or Mothership crew, which heavily implies that the whole kiith was either expelled from the Coalition and exiled from the pole, or that it was completely wiped out for their betrayal, either by the Coalition or by the Gaalsien, in between the Khar-Toba's discovery and the Kharakian Genocide.