User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-28626666-20180102035032/@comment-2601:8C:601:5692:8493:9949:ADF9:B1B2-20180103091255

@Tengen You forgot Mammon of the Extra Demons which became one of the new Seven Great Satans along with Belphegor. Also, I'm fairly sure it's supposed to be petri dish not pastry dish (or is that stupid autocorrect's fault). The other original Satans and Mephisto Pheles are likely all "true" Devils, and it's highly likely that the Extra Demons are the same. I doubt Lucifer said "I'm going to bioengineer 72 powerful devils and the rest will be relegated to the side". He most likely created numerous artificial Devils and only 72 were deemed successes, becoming the 72 Pillars, while the rest were failures and were disposed of.

Perhaps other than the Extra Demons, which consisted of the most powerful true Devil clans (loyal to the Four Satans), possibly Lilith, and the Satans themselves, the true Devils are what became the commoner masses of low-class Devils (i.e. Lirenkus and his dad, etc.).