Jack

"Commander" Jack is a member within Kingdom Organization.

Rakshasa Street Arc
Jack is introduced sat down greeting Kelly, Norah and Gavin before questioning their days being Requiem Generals. When Norah asks why he wished to meet just three of them, he says if he summoned everyone at once, they may attract unwanted attention. Informing Kelly of his brother's death in Rakshasa Street by Cao Yan Bing, he questions if he knew. Explaining his actions has fulfilled half of their plan. Telling the knights their main obstacle, is those who have a body of a Martial God. Gavin mentions those who posses body of a Martial God are born every few centuries. Jack says its true, however, there's three in the current era. Asked if they should continue their roles as Requiem Generals, Jack says it can be perceived so. Disappointed by his answer he mentions wanting to get his hands on Cao Yan Bing, and that Kelly wishes for it more than him. When Jack mentions the superiors have dispatched someone to kill him. Being asked who, he says its the only member out of the Ten Knights, who isn't a Requiem General.

Quotes
"We already the sacred weapon Kronos in our hands, the only thing left to obtain is the Divine Pearl of Xihe."