Haku

Biodata

Feature	Information
Name	Haku (Yuki Haku)
Alias(es)	Nico Robin; Lucy
Affiliation	Konoha ANBU Special Operations Squad; “One Piece” team
Occupation/Role	ANBU Special Operations Squad member; Uchiha Sen’s attendant and caretaker
Status	Active 50
First Appearance	Chapter 9

Background / History

Haku initially shadowed Zabuza Momochi during the Land of Waves mission while disguised as a Hidden Mist pursuit ninja. After Sen defeated Zabuza, Haku used senbon to place him in suspended death and removed him from the battlefield. Haku thanked Sen for creating the opportunity to do so, while remaining committed to Zabuza’s survival. 9 10

During the second confrontation on Tazuna’s bridge, Haku trapped Sasuke with Crystal Ice Mirrors. Sen’s Wood Release shattered the mirrors, restrained Haku, drained Haku’s chakra, and rendered Haku unconscious. 11 12

After Gato’s defeat, Zabuza asked Sen to take care of Haku. Sen accepted, and Haku and Zabuza subsequently became part of Sen’s Hokage-authorized ANBU Special Operations Squad. 13 14 Sen later assigned Haku the “One Piece” codename Nico Robin, which Haku happily accepted. 15

Haku gradually became Sen’s closest day-to-day companion, managing food, household matters, travel supplies, and Sen’s frequent eccentric demands. Haku also accepted Sen’s invisible “anime” as meaningful rather than dismissing it, unlike Zabuza. 17 18

Personality

Haku is gentle, patient, and unusually accommodating toward Sen’s delusions and unpredictable behavior. Haku treats Sen sincerely, believes he can recognize genuine kindness, and reassures Zabuza that Sen is “great” despite his instability. 17

Haku is also highly attentive. Whether on missions, during travel, or in dangerous situations, Haku anticipates Sen’s needs by bringing food, grilling equipment, household supplies, and even a bed and sofa for extended travel. 18 22

Despite this soft demeanor, Haku is decisive in combat. When Sen incapacitated three Root operatives without killing them, Haku immediately finished them with precisely placed ice needles. 25

Appearance

Haku is repeatedly perceived by others as gentle-looking and is at times mistaken for a young woman. 19 21

• Often seen beside Sen and Zabuza as the youngest-looking member of their squad.
• Uses an ANBU cat-faced mask as part of the Special Operations Squad’s equipment. 14
• Carries scrolls containing cooking equipment and supplies. 18 24

Abilities & Skills

Ice Release

Haku possesses an Ice Release Kekkei Genkai and uses ice-based techniques defensively and offensively.

• Created Crystal Ice Mirrors to trap and bombard Sasuke with senbon. 11
• Formed an Ice Rock Dome to block a Root squad’s incoming shuriken and kunai. 24
• Can lower the surrounding temperature by mobilizing chakra. 28
• Is vulnerable to sustained Fire Release pressure; the Ice Rock Dome began melting under three simultaneous fire techniques. 24

Senbon Techniques

Haku uses senbon with lethal accuracy.

• Placed Zabuza into a suspended-death state to extract him from the Land of Waves battlefield. 9 10
• Killed three incapacitated Root operatives by striking the backs of their heads with ice needles. 25

Mobility and Support

Haku is capable of rapid movement and reliable battlefield support.

• Appeared on a distant tree branch in a flash while assisting Zabuza during the Chunin Exams. 19
• Protected Sen from Root attacks while Zabuza engaged Tenzō. 24
• Cleaned Sen after he was cut out of a summoned python using a gentle wind technique. 20

Cooking and Household Management

Haku handles the group’s meals, supplies, and domestic responsibilities.

• Prepares Sen’s preferred foods, including barbecue, beef, fruit, and specialized sauces. 17 18 19
• Uses storage scrolls to deploy a complete barbecue setup in the Forest of Death. 18
• Transported Sen’s bed and sofa during the journey toward the Land of Iron. 22

Equipment / Items

• Senbon needles
• ANBU cat-faced mask and Konoha forehead protector 14
• Storage scrolls containing cooking equipment and ingredients 18 24
• Barbecue grill and prepared food supplies 18 22

Relationships

• Uchiha Sen — Squad leader and the person Haku serves most closely. Haku manages Sen’s home life, food, supplies, and safety, while treating Sen’s strange behavior with patience and sincerity. 13 17 18
• Zabuza Momochi — Former master and fellow Special Operations Squad member. Haku remained loyal to Zabuza during the Land of Waves conflict, while Zabuza later entrusted Haku’s future to Sen. 9 13
• Naruto Uzumaki — A familiar companion within Sen’s circle. Haku joins Naruto, Sen, and Zabuza during the Chunin Exams barbecue gathering. 18 19
• Tsunade Senju — Travels and socializes with Sen’s group after their meeting in Tanzaku Town; Tsunade later offers Sen and Haku a place to stay. 34 41
• Sakura Haruno — Explains that Sen is kinder than the Uchiha reputation suggests when Sakura asks how Haku communicates with him. 19

Story Role / Major Arcs

Land of Waves Arc

• Observes Sen’s battle with Zabuza while concealed and extracts Zabuza through staged death. 9
• Battles Sasuke using Crystal Ice Mirrors before being overwhelmed by Sen’s Wood Release. 11 12
• Becomes Sen’s subordinate after Zabuza asks Sen to care for Haku. 13

ANBU Special Operations and Chunin Exams

• Joins Sen and Zabuza in the Hokage’s directly controlled Special Operations Squad. 14
• Supports Sen at home, accompanies him into the Forest of Death, and organizes food during the Chunin Exams. 17 18
• Helps rescue and clean Sen after Orochimaru’s summoned python swallows him. 20

Root Pursuit Battle

• Shields Sen from the Root squad’s opening attacks with Ice Release. 24
• Follows Sen’s order to prepare food during the battle, trusting his ability to withstand the attackers. 24
• Executes the three Root operatives defeated by Sen’s Crimson Lotus Exploding Flame Blade. 25

Land of Iron Journey and Later Travels

• Accompanies Sen and Zabuza on their Land of Iron reconnaissance mission. 22 26
• Remains beside Sen through casino incidents, encounters with Tsunade, and the revivals of former Hokage. 28 34 41
• Continues caring for Sen after the group returns to Konoha, including during his attempt to prepare a meal described as “delicacies from land and sea.” 50

Trivia

• Haku accepts Sen’s fictional codenames without protest, including Nico Robin and Lucy. 15 26
• Haku claims to be able to see and learn from the anime Sen describes, while Zabuza cannot perceive it at all. 17 18
• Sen calls Haku his “most considerate little padded jacket” after Haku prepares a barbecue setup in the Forest of Death. 18