User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-24173056-20150723133335/@comment-16281343-20150723151817

Crom Cruach, Apophis, and Azi Dahaka are the top three Evil Dragons according to Azazel in v14.

That is before they met Crom Cruach in v16.

~Answering the question on the parent comment, KB is no longer relevant in the story after Qlippoth came to be.