Talk:Daemon/Daemon Lord/@comment-26571774-20190719092320/@comment-10330822-20190720004814

Diablo was an Arch Demon, A-Class, just like the others. He gets a huge buff after getting a name and getting a body made from the corpses of the 15k soldiers Rimuru killed. At that point, he's Demon Duke, EP400,000+, A+-Class.

Blanc, later Testarossa, started off as an Arch Demon, this is confirmed what she was, she later possessed a small countries' princess and was later killed because other nations feared she'd become the next Guy Crimson. Guy was the only Demon King among Progenitors until Diablo ascended.

Blanc was still an Arch Demon when she entered Rimuru's service, whether she was something stronger at one point is unknown, but she was never, at any point, stated to have been a Demon King. She evolved into a Demon Duke like Ultima and Carrera after Rimuru gave them artificial bodies and named them.

Also, the very idea she had Demon Dukes attending her doesn't make sense in the first place really. Let me explain, the Arch Demons are the strongest "normal" demons "in the wild". The strongest among them are the Progenitors, which are said to be the oldest arch demons.

The only way an Arch Demon can become stronger is to be named by a superior being or to become a True Demon Lord. Red Progenitor Rouge did the later when he was summoned by a kingdom and he destroyed both, gathering the souls needed to evolve into a True Demon Lord and a Demon King. He later gained a name from Rudra and also responsibilities from Veldanava.

Guy then presumably named Mizari and Hirari, but they only became Demon Duke because Demon King Guy can't make something as strong as himself through Name Order alone. He also tried to turn them into True Demon Lords but apparently he couldn't because he had already formed a soul corridor with them and they could only become True Demon Lords by gaining x10 as many souls as the normal Demon Lord candidate.

This is eventually what happened when Rimuru agreed to evolve Mizari and Hirari for the fee of 500,000 souls.

Noir, Jaune, Blanc, and Violet all got a similar treatment but from Rimuru himself. As Rimuru was a Demon Noble/Demon King-level being, he could summon Arch Demon Black Progenitor Noir. He then named him Diablo after becoming the Demon Slime, which is of the same level as a Demon King.

Diablo then became a Demon Duke and became more powerful than Jaune, Blanc, and Violet. Diablo later defeated Jaune, Blanc, and Violet and sent them to serve Rimuru, and Rimuru gave them bodies and names and they all became Demon Dukes like Diablo. Diablo later became a Demon King after becoming a True Demon Lord from souls given to him from Rimuru, and Rimuru later evolved Testarossa, Ultima, and Carrera into Demon Kings by the same method.

Now, Diablo and Guy serve as the superiors to their Demon King compatriots. So despite all the Arch Demons becoming Demon Kings, only Diablo and presumably Guy became Demon Gods after that. Probably because of the increase in their limiter or possibly, for Diablo, because Rimuru became an Ultimate Slime and a Great Demon Lord, which is a class above Demon King and Demon God.