The Xi-Yu Family (シュウ=ウ一家, Shū u Ikka) is one of the three largest Mafia families in the Kakin Empire, and the most powerful by finances and numbers.[1] It is led by Onior Longbao.[2] Third Prince Zhang Lei Hui Guo Rou is one of their benefactors.[1]


Succession Contest arcEdit

Members of the Xi-Yu Family boarded the Black Whale in order to secure territory on the New Continent. The boss is a VIP on Tier 1 of the ship. The underlings are scheming to whittle down the numbers of the two rival families, Heil-Ly and Cha-R, until landfall.[1]

After a phone call with Brocco Li, Onior orders his Underboss, Hinrigh Biganduffno, to find Hisoka before the Phantom Troupe.[2]


Xi-Yu Family
Boss Underboss Benefactor
Xi-Yu 1


  • Taken together, the katakana of the three Mafia families form "Shūeisha", the company responsible for the publication of Weekly Shōnen Jump and of Hunter × Hunter.
  • The crest bears resemblance to the kanji for "to surround" (周), which can be pronounced like the first part of the family's name ("shū").


  1. 1.0 1.1 1.2 Hunter × Hunter, Chapter 371
  2. 2.0 2.1 Hunter × Hunter, Chapter 378