I just find it interesting in now looking back to Meliodas’ revelation in how the commandments and the power shift was brought about.
“When our father, The Demon King, decided to bring the vast, chaotic Demon world under his reign...” to me implies that beforehand, the Demon world was an existing place but with obviously no hierarchy, or absolute ruler, yet why would he want to bring it under his reign to begin with ?
Obviously there’s a huge lack of data on this but it’s got me curious about Mel’s dad’s background now.