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. Claiming the King and Queen won't be making an appearance. Informing Kelly of his brothers death in Rakshasa Street by Cao Yan Bing, questioning 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 is three in the current era.

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