Necron fraction

Necrons are armed with gauss weapons that disintegrate targets into atoms. They also have phase weapons like a scythe or phase sword that can pass through any armor on the battlefield. Necrons appear as an unbreakable advancing wall supported by advanced technology and monstrous structures.

Necrons are soulless machines, they operate strictly according to protocol and they take no prisoners.
The Necrons are much more developed; they surpass almost all factions in terms of development.
hierarchy:
Necrons' society is strictly hierarchical. Supreme power belongs to the phaerons; below them are the overlords who rule the tomb worlds, the lords who command the legions, and the nemesors who command vast armies.

In the 41st millennium, the Necrons began to awaken, their armies were divided into different dynasties, they began to restore their influence, although formally they were united by a single goal. Among the awakened leaders, the silent king Sareh also awakened, who, according to some versions, returned to fight the real threat of the Tyranids.