Warhammer 40K: Post-Indomitus Necrons - Bell of Lost Souls
Basically the warhammer 40k universe : r/Warhammer
Kardashev Scale Wiki
Necrons, Kardashev Scale Wiki
In the Grimdark future there is only War, and Fanfics(Warhammer 40k Ideas), Page 1432
The Kardashev Scale, VS Battles Wiki
A Kardashev II civilization in 40k, Page 5
Quest-Discussions
m1180132 Necrons Reference Sheet NoPW, PDF, Fictional Military Organizations
How advanced is the technology in the Warhammer 40k universe according to the Kardashev scale? - Quora