Yverk

Yverk (イヴェルク) was a character of The Promised Neverland, and an antagonist of the Cuvitidala Arc. He was a Duke as well as one of the heads of the Five Regent Families.

History
A thousand years ago, Leuvis brought Julius Ratri before the Duke with a proposal to end the war between humanity and demon kind. Yverk allowed Julius and audience with the then Demon King. The plan was to separate the worlds which the Demon King agreed to and had Yverk take the human to meet the one being who could make the peace possible.

Appearance
Yverk is a very tall humanoid demon who wore long black, baggy robes with long, loose sleeves and a necklace with various red jewels and golden rectangles on it. He has yellow eyes and long white hair tied into pigtails. Yverk wore a unique demon mask consisting of four eyes holes - two vertically placed and two horizontally placed. However, his eyes only see through the vertically placed eye holes. There is nothing behind the horizontally placed eyes holes except pure blackness giving his mask a menacing appearance. His mask also contains two large horns coming out of the top which loop forward and then curve upwards and have various red jewels and golden rectangles tied to them similar to the ones on his necklace. Sometimes he can be seen wearing a red poncho with gray tassels over top his robes.

Personality
Being the head of his respective house, Yverk seems to be a powerful and strict man who constantly reprimanded Dozza on his manners and behavior. Yverk seems to hold a lot of respect to the queen, instantly kneeling for her when she entered the room where he was waiting for her.

Introduction Arc
Holding a Vida plant in his hands, Yverk commented on how the orphans in the Premium Farms would satisfy since they are special meals for  to feast on as compared to the lower grade human meat he and the other demons consume. Yverk added how they should celebrate the harvest and pray for.

Cuvitidala Arc
On November 2047, in the imperial capital, Yverk stood side by side with the four other representatives of the different houses. Yverk was consistently reprimanding Dozza's manners and kneeled onto the ground when queen Legravalima made her entrance.

Imperial Capital Battle Arc
He was later killed by Geelan after the latter infiltrated the Royal Capital to get revenge.

Trivia

 * The following are Yverk's rankings in some of The Promised Neverland's official popularity polls.
 * In Shounen Jump's popularity poll results announced in Chapter 88, Yverk is in 67th place.
 * In Shounen Jump's 2nd popularity poll results announced in Chapter 102, Yverk is in 42nd place.
 * Yverk's favorite food is human.
 * Yverk is the only member of the Five Regent Families who gets a speaking role in the anime.
 * In the official art book, Yverk's "hair" is described as not actually hair, but rather "boneless, creepy finger-like tentacles".