Spiritually, a distant relative of Duke Devlin/Ryuji Otogi.
Demon characters are a bit harder with how many cool designs Demizu came up with.
The Grace Field Boss Demon only shows up at the beginning and end of the series (barring S2 teasing me by having him show up during the Cuvitidala Arc), but he's such an imposing figure in that initial appearance when the kids are the most vulnerable that he stands out to me, particularly with the tubing that looks like it's from a gas mask. Gives him a clinical feel.
(Concept art from The Promised Neverland Art Book World | Chapter 176 | S1 Episode 1)
Yverk has such a grand, regal bearing to him and one of the sickest mask designs.
(Concept art from The Promised Neverland Art Book World | Chapter 147 | Chapter 7 | WSJ Issue #41 2018 Popularity Poll for Chapter 102 | Chapter 131)
I wish he got to be at the forefront more, but I can appreciate him as a constant background presence maintaining the status quo for over a millennia.
Bayon Sr. continues the trend of having one of the coolest mask designs, and I like how spindly he looks.
