Hack

Hack is very tall, standing at 280cm.

He is a fish-man from Fish-Man Island, specifically an Ebisu Grouper fish-man.

He has a muscular build and always wears a martial artist's uniform called a "dogi."

Hack has a strong sense of honor and loves fair and open battles.

He does not like underhanded tactics or people who treat fights like a joke.

He is proud of his fish-man heritage but does not look down on others.

He wants to build friendships through fighting, even with humans who dislike fish-men.

Hack is friendly and supportive, and he is loyal to his friends and students.

Hack was born in Ryugu Kingdom, on Fish-Man Island, in the Grand Line.

He is 38 years old and was born on August 9th (8/9).

His blood type is F.

Hack’s favorite food is kawara senbei (a type of Japanese rice cracker).

He is a member of the Revolutionary Army, serving as a soldier and a martial arts instructor.

He travels on the Revolutionary Army’s ship, Wind Granma.

Hack is a master of Fish-Man Karate and Fish-Man Jujutsu.

He is known for his special move, "Four Thousand Tile True Punch," a powerful and direct punch used to send enemies flying.

Hack can defeat most opponents with a single hit and is one of the top Fish-Man martial artists, just behind Jinbe.

He has fought against fighters who can use Armament Haki and still performed very well.

Hack is a close friend of Jinbe, the captain of the Fish-Man Pirates and former Warlord of the Sea.

He teaches Koala martial arts, and she looks up to him as a teacher.

Hack has known Sabo since he joined the Revolutionary Army as a boy.

He spends a lot of time with Sabo and Koala, sometimes getting pulled into their adventures.

Hack believes in making friends with others, even with people who start as enemies.

• Hack’s nickname is "Hundred Dan Hack," showing his high rank in martial arts.
• His favorite food is kawara senbei.
• Hack’s birth date, August 9th, matches his name by numbers in Japanese (8=Ha, 9=Ku).
• "Dan" in his nickname refers to martial arts rankings.
• He likes to wear a martial artist’s dogi.

"As my friend Jinbe is our hope, I believe there is a way to friendship even through fighting! I will continue to fight!"

Dressrosa Arc: The Corrida Colosseum

Hack first appears during the Dressrosa Arc.

He enters the Corrida Colosseum tournament in the New World country of Dressrosa, hoping to win the "Flame-Flame Fruit," once owned by Ace.

He fights bravely in Block B, knocking out many opponents with one punch.

Clash with Bartholomeo

Hack faces Bartholomeo, who sets up a barrier.

Hack punches the barrier with all his strength, but the attack fails, and his right arm is injured.

Bartholomeo defeats Hack, and Hack is thrown out of the ring.

Captured and Turned into a Toy

After he loses, Hack is captured by Trebol and turned into a toy by Sugar’s power.

He is sent to the underground scrapyard.

Even as a toy, he manages to contact Koala and reports about the underground world of the colosseum.

Reuniting and Helping in the Battle

After Sugar is knocked out, Hack returns to normal.

He works with Koala and Sabo to stop the evil plans in Dressrosa, especially the weapon exports.

Mansherry heals Hack's arm, and he leaves Dressrosa with Sabo.

Teaching and the Revolutionary Army

In a past story, it is shown that Hack taught Fish-Man Karate to children in the Revolutionary Army, including Koala.

He met Sabo 12 years ago when Sabo joined the army as a boy.

Hack respects those who already have fighting skills and does not force his martial arts on artists like Robin Nico, who is strong with joint techniques.

Hack values "friendship through fists."

He stands out as a noble and honorable fighter among the Revolutionary Army.

He is always ready to lend his strength to his friends and fight for justice.