"Gon, my buddy! I will fight you, okay? I promise you that."

— Sadaso to Gon Freecss, in "Training Resumes"

Sadaso (サダソ, Sadaso) is one of the three fighters who challenge Gon and Killua on the 200th floor of Heavens Arena.[3]


Sadaso's 2011 anime adaptation design

Sadaso's 1999 anime adaptation design

Sadaso's manga appearance

Sadaso is a tall man with slanted eyes, thin lips, a pale complexion and a face similar to a mask. His hair is green in the 1999 anime and white in the 2011 anime. He is missing one arm due to his receiving the "initiation" to the 200th floor of Heavens Arena. When he leaves the Heavens Arena after Killua's threat, he is wearing sunglasses/goggles for the first time and his face looks less pale than before (just in the anime).


Sadaso is ruthless in his ambition, even resorting to kidnapping and blackmailing to get his way. He is intent on becoming a Floor Master in order to live off the money and fame of the rank despite lacking the necessary strength, for which reason he only fights opponents weaker than himself. He often speaks in a taunting or even threatening manner. When he was intimidated by Killua, however, he decided to leave the Heavens Arena forever.


At some point in his life, Sadaso reached the 200th floor of the Heavens Arena without knowing Nen. He was thus "initiated" by an opponent whose malicious aura attack deprived him of his left arm.[3] Prior to fighting Gon and Killua, he totalized five wins and an unknown number of losses (presumably at least one).[1]


Heavens Arena arc

Three fighters who pick on rookies

When Gon and Killua learn how to use Nen and reach the 200th floor, Riehlvelt, Gido, and Sadaso confront them, waiting for them to register[4] to pick them as their next opponents.[3] When, two months later, Gon has recovered from his fight against Gido and has begun training under Wing again, the trio confronts the boys again. Sadaso declares his deadline is approaching. As a veiled threat, he offers to show them his Nen ability, but before he can do so, Gon offers to fight him on June 10th. Sadaso makes it clear that his deadline is May 29th, but Killua cuts the conversation short and leaves with Gon and Zushi. As they walk away, Sadaso promises Gon the two of them will fight, eyeing the younger boy.[5]

Sadaso threatened by Killua

To force his hand, Sadaso comes up with the idea of taking Zushi hostage. He tails him and renders him unconscious with his aura arm, but he, Riehlvelt, and Gido are immediately discovered by Killua, who accepts to take Gon's place and give each of them a free win. They set Zushi free, and Killua departs with him but warns them not to break their promise. However, against Killua's terms, they blackmail Gon into arranging a fight against each of them. Killua discovers the fraud. On May 29th, ten minutes before his match against the boy, Sadaso already savors his status as Floor Master, but Killua appears behind him, pointing a knife to the back of his head. He orders Sadaso never to show his face to him and Gon again. Frightened, Sadaso throws his match[1] and leaves the Heavens Arena. As he does so, he phones Riehlvelt, informing him of his suspicion that Killua is an assassin and warning him that the boy might come after him or Gido next.[6]

Abilities & Powers

In the past, Sadaso must have been a capable martial artist, having reached the 200th floor of the Heavens Arena without knowing Nen[3] and without the use of weapons.[7] However, after his injury he fought only opponents new to Nen, so his proficiency remained relatively low, to the point he was unable to sense Killua and was frightened by him, when the boy had only mastered three of the Four Major Principles.[6]


Sadaso is a Transmuter*[2] who specializes in altering the shape and consistency of his aura. Beside Hatsu and Ten, he has demonstrated the ability to use Ren[5] and In, since Zushi was unable to see his aura or perceive it through any other sense.[1]

Sadaso's Nen Type: Transmutation
Type: Transmutation Aura Arm*
Nen arm 2011.png Sadaso transmutes his aura into an enormous left arm to replace the one he lost after being "initiated". Those who are clutched by the hand are restrained and unable to make sounds or even breathe, causing them to quickly pass out. It has been noted to be hard to escape from.[1]


  • Heavens Arena arc:
    • Sadaso vs. Heavens Arena fighters below the 200th floor (Past)[3]
    • Sadaso vs. Heavens Arena 200th floor fighter (Past)
    • Sadaso vs. Heavens Arena 200th floor fighter (Past)[1]
    • Sadaso vs. Heavens Arena 200th floor fighter (Past)[1]
    • Sadaso vs. Heavens Arena 200th floor fighter (Past)[1]
    • Sadaso vs. Heavens Arena 200th floor fighter (Past)[1]
    • Sadaso vs. Heavens Arena 200th floor fighter (Past)[1]
    • Sadaso vs. Killua Zoldyck*[1]
    • Sadaso vs. Gon Freecss*[6]


  • Sadaso, Riehlvelt, and Gido all have developed Nen abilities related to the injury they suffered during their Baptism. In Sadaso's case, he morphs his aura into the arm he lost.[1]

Anime and Manga Differences

  • In the 1999 anime adaptation, which also erased the disabilities of his two companions, Sadaso has both arms intact. His physical left arm is always seen protruding from his tunic, leaving his left sleeve dangling.[8]

Translations around the World

Language Name
The Arab world Flag.png Arabic ساداسو
South Korea Flag.png Korean 사다소 (Sadaso)


  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 Hunter × Hunter - Volume 7, Chapter 57
  2. 2.0 2.1 Hunter × Hunter Hunter Association Official Issue: Hunter's Guide; Character & World Official Databook (pg. 204)
  3. 3.0 3.1 3.2 3.3 3.4 Hunter × Hunter - Volume 6, Chapter 49
  4. Hunter × Hunter - Volume 6, Chapter 48
  5. 5.0 5.1 Hunter × Hunter - Volume 7, Chapter 56
  6. 6.0 6.1 6.2 Hunter × Hunter - Volume 7, Chapter 58
  7. Hunter × Hunter - Volume 6, Chapter 47
  8. Hunter × Hunter - Episode 39 (1999)


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Heavens Arena
Floor Masters
Members AmoebaChrollo LucilferGaGamaHaeHisoka MorowKamakiriKanjiru
Non-Canon Floor Masters
Members AmoebaGaGamaHaeKamakiriKanjiru
Members ChibabaDoradoGidoGon FreecssKastroKillua ZoldyckMaitaRiehlveltZushi
Non-Canon Fighters
Members DoradoAmoriImoriUmori
Commentators Cocco
Other staff members 200th Floor Clerk
Non-Canon Employees
Commentators Kenji Hatakawa
Other staff members Elevator Operator
Members Baka Ki El Dogra
Non-Canon Spectators
Members Togashi