Peter Ratri

Peter Ratri (ピーターラートリー) is the 36th and current head of the famous Ratri Clan and the younger brother of James Ratri. He is also the main antagonist of the series.

Personality
Peter is a by the books no nonsense kind of person, as demonstrated when he had several humans executed for being labelled as traitors. He is also someone who is willing to sacrifice others for the sake of keeping the promise.

Search For Minerva Arc
He hates his brother's Goldy Pond base. chapter 73 page 1-5

James Ratri
The two of them originally had a good brotherly bond. Peter even agreed with James his way of thinking for a while because he thought that it was better. This seemed to be a facade when Peter revealed that he was just pretending to agree with James' plans. Peter even went as far to take James his title of the 35th head of the family and claim it himself. He then ordered his underlings and the rest of his clans to kill his own brother, implying the hostility between the two.

Bayon
Peter seems to have some sort of connection to the demon. Possibly because Peter found out the truth about Goldy Pond that James Ratri made.

Bayon hates Peter when he found out about the tunnels in Goldy Pond. chapter 83 page 18

Trivia

 * The following are Peter Ratri's rankings in some of The Promised Neverland's official popularity polls.
 * In Shounen Jump's popularity poll results announced in Chapter 88, Peter is in 58th place.
 * In Shounen Jump's 2nd popularity poll results announced in Chapter 102, Peter is in 50th place with a total of 20 votes. He is tied with Pepe, Sandy, Monica, Nous, Nouma, Tom and Marvin.