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"Ichikawa, I won't be giving up after all. I've gotta get moving if I want to stand by her side!"
— Kafka to Leno Ichikawa

Kafka Hibino ( () () () カフカ, Hibino Kafuka),[1] also known as Kaiju No. 8 ( (かい) (じゅう) 8 (ごう) , Kaijū Hachi-gō),[4] is the main protagonist of the Kaiju No. 8 manga series.

He is a Defense Force officer [6] and a former worker for the Professional Kaiju Cleaning Company Monster Sweeper Inc. [1] who was turned into humanoid Identified Kaiju with shapeshifting abilities after a small kaiju entered his body.[1] He was formerly a member of the Third Division [7], but he was recently transferred to the First Division.[8]


Kafka is a tall man with dark brown spiky hair, large eyes with small irises, thin eyebrows, a mild goatee on his chin, he sports a rather muscular frame except for his slightly pudgy belly and he usually has a jovial expression on his face.[1]

Working for Monster Sweeper Inc., Kafka once regularly wore the company's uniform; it is a grey coverall with a red Monster Sweeper logo on the right side of the chest.[1]

Kafka's Kaiju Form is mostly covered with coal-black scales and plates, cyan energy sometimes glowing from between the cracks (most notably when he is charging a powerful attack). However, his head, spine and clavicles appear to be made from exposed bone, resulting in these features being a contrasting white. Large plates with dorsal spines cover the back of his head and neck above the shoulders with the very top piece being white. As for his head, it has been described as a 'demonic skull-face' with two short, thick horns, a hole for a nose, and sharp, exposed teeth that extends down his neck. His eyes have black sclera with a cyan iris. Seemingly originating from them are several cracks, the left eye having several chunks of the 'mask' missing on the lower left part. [1]

When out of control, some of the Kaiju Form's features become more pronounced. Such as; general size relative to people, elongated horns, more predominate dorsal plates, mouth extending further down his neck, and eyes turning entirely cyan (without pupils or a definable beginning or end to his sclera).[9] The Kaiju Form's features became even more pronounced in the anime: four extensions on the back positioned in a cross shape, a greater height that forces a crouched posture, and the cyan energy turning red.[9]



Kafka has a comically childish personality in most situations, resulting in him being an easy target for teasing by other characters [1] despite being a determined and dedicated individual in serious situations, bringing him to try his best to do everything to succeed whether individually [1] or for the betterment of the group.[10] Kafka is also a genuinely caring and kind guy long before he joins the Defense Force, resulting in him going out of his way to help and care for others, regardless if they want it or not.[1] Some examples of this behavior are when Kafka offers solutions to inconveniences [11], saves people from imminent danger,[12] and sometimes scolds them for not taking better care of themselves.

It's for these reasons that Kafka does everything he can to not disappoint or sadden those who have put their trust and belief in him.[13] Having to break that connection in times of need causes him to become insecure and unsure of what he will be able to achieve in the future.

Thus, when Kafka experiences losing control of his transformed body [9], the horror of seeing himself become the thing he's hated since childhood concludes with him taking drastic action to end the situation.[14] Later on, the fear of losing control and hurting those he cares about prevents him from being able to use his Kaiju form until Kikoru Shinomiya encourages him to trust and have faith in his comrades and the Defense Force.[14]

Kafka seems to get annoyed when he is labeled as an "old man" and always reminds younger people of his condition of seniority when called names.[4]

Powers & Abilities[]

Overall Abilities: After an unknown kaiju entered his mouth, Kafka obtained the power to transform into a humanoid daikaiju, gaining immensely powerful abilities.[1][3] He eventually learned to use this power on a more advanced level, allowing him to change specific parts of his body without a full transformation;[4] conversely, this allows him to outwardly appear completely human if he so chooses.[15] Unfortunately, his kaiju nature still remains, making it nearly impossible for Kafka to presently draw out beyond 1% of released power from the Defense Force combat suit he wears.[16] Kafka's kaiju form has a fortitude level of 9.8, the highest fortitude level seen so far in the entire series, making him one of the most powerful kaiju to ever exist, if not the most powerful.[17] He is able to overpower other kaiju rather easily,[1][17] even those as powerful as a base Kaiju No. 9 who has a fortitude level of 8.5, without even tiring out.[18] Kafka has shown so much dexterity with his new form that he could resist an onslaught from Vice-Captain Soshiro Hoshina [19] and disarm him without injuring him.[20] He even proved to be strong enough to resist Isao Shinomiya's attacks, a man armed with a Numbers weapon[21] and easily overpower a fellow Identified Kaiju like Kaiju No. 13.[22]

Kafka's transformation appears to get the better of him sometimes, resulting in a raging Kaiju No. 8 out of control. It was also discovered that the longer Kafka stands in his kaiju form, the more his human body turns into a kaiju, with no possibility of going back to normal (Chapter 108). Kafka retains his individuality and sense of self when this occurs, leaving him to helplessly watch his body rampage without his consent.[9] Furthermore, due to his age, Kafka's body can't take the full strength of his blows and will eventually be damaged whenever he abuses his powers.[23]


  • Unleashed Combat Power: Kafka is the only Defense Force troop member to ever release 0% of their combat suit's power [10], which later increases to 1%.[16] Thus, only using his suit, Kafka's physical attributes are almost dampened by his inability to draw more power. [11] However, he still manages to get strong enough to easily tear into dead kaiju bodies. [11]
  • Kaiju Transformation: After his body was invaded by a kaiju, Kafka gained the ability to transform into an incredibly powerful humanoid kaiju himself. [1]
    • Immense Strength: In kaiju form, Kafka gains immense physical strength [3] to the point where he can even annihilate a Honju [17] or seriously injured an Identified Kaiju [22] with just a single punch. Kafka is also able to use this strength to cover great distances in a few leaps. [23] Even with only part of his body transformed, Kafka could easily lift the company's car, making Kikoru Shinomiya believe that he had his own Defense Force suit. [4] His strength in his Kaiju form is said to be on par to Isao Shinomiya. [9]
    • Immense Durability: In his kaiju form, due to his exceptionally thick skin, Kafka is extremely resilient to the point of tanking shots [18][24] and coming out unscathed. He was able to survive and to defeat the combined power of Isao and Kaiju No. 2. [21] His pain resistance is so strong, he barely felt any pain when Soshiro slashed him multiple times. [19]
    • Immense Speed and Reflexes: In his kaiju form, Kafka possesses immense speed and reflexes as he is able to evade Soshiro's extremely fast sword attacks with relative ease. [19] Even when not fully transformed, Kafka has shown to be able to run at tremendous speeds, impressing even Soshiro Hoshina himself. [25]
    • Energy Attacks: Kafka is able to power up his body with electrical-like energy that flows through his body and spine. [3] Usually, the energy is used to make some of his attacks more powerful. [3]
      • Energy Roar: By concentrating the energy in his spine and opening his mouth wide, Kafka is able to release a powerful energy roar that can easily neutralize attacks from individuals as powerful as Kaiju No. 9. [18]
      • Energy Boost: Working in tandem with his shapeshifting powers, Kafka's energy manipulation can take the form of energy flowing out of his body's pores like thrusters, enhancing the strength and speed of his attacks. [17]
    • Shapeshifting: Kafka can manipulate parts of his body, manifesting tentacles and even smaller heads and limbs on his body, and can turn his tongue into a long-range capturing weapon. [3] He can also use this power, in conjunction with his energy and super strength, to shapeshift his elbows into thrusters, for more powerful blows or to morph his legs for better stability. [17] Having more fine control over it, he’s able to block weapons by changing any area of his body into a jaw to grab hold onto bladed attacks. [19]
    • Gigantification: When out of control, Kaiju No. 8 can grow in size. [9]
    • Regeneration: Kafka is able to regenerate from attacks and regrow back limbs, but doing so consumes his stamina. [19] When going out of control, Kafka's body can instantly regrow from his core after detaching it from his body. [9]
    • Kaiju Localization Sense: Kafka is able to sense when a kaiju is going to appear near him or already within the vicinity of his present whereabouts. [3] He is also able to determine what type the kaiju is if he has encountered it before. [3] More powerful kaiju can trigger this ability even when Kafka is not transformed. [26]


  • Kaiju Knowledge: Kafka's time as a member of the kaiju disposal team gives him immense knowledge on kaiju anatomy, using it to identify weaknesses and the type of kaiju he's facing. [10][11][27] Even when working with his Defense Force suit, from which Kafka can only draw 1% of its power, he is able to easily pierce through a kaiju's corpse and dig into it to further study it and localize the core. [11]
  • Hand-to-Hand Combatant: Kafka is at least somewhat learned in unarmed combat, making use of this, while as Kaiju No. 8, making use of his immense strength, speed, and reflexes as a Humanoid Kaiju to overpower most opponents. However, despite being incapable of matching more skilled foes, such as Isao Shinomiya and Soshiro Hoshina without transforming, the former pointed out that he hasn't skipped out on training, impressing him.

Fighting Style[]

Despite having a fortitude level of 9.8 as a Kaiju, Kafka has the lowest recorded released force among the Defense Force as a Human, making it close to impossible to fight like their normal members and wield weapons. However, to aid Kafka in the fight against Kaiju No. 9 and to lessen his time spent as Kaiju No. 8, Soshiro Hoshina begun instructing him in Squadron-Style Combat Technique (隊式格闘術, Tai-shiki kakutō-jutsu), a bare-handed fighting style perfected by Isao Shinomiya. There, Kafka learned its fundamentals, to channel the power generated from his lower body into his fists, however, while not transformed his strength and skills doesn't match Soshiro, let alone Isao, both of whom either trained in or perfected it.

As Kaiju No. 8, Kafka combined strength and technique to prove a sufficient enough match for Kaiju No. 9, but proved incapable of doing much against his greater strength and Isao's perfected Squadron-Style Combat Technique. But, expecting this to happen, Soshiro taught him the hand-to-hand techniques of the Hoshina Family to instead evolve the fighting style, Kafka eventually managed to use an alternative Third Form to catch Kaiju No. 9 off guard and critically damage it.



Combat Suit: When fighting without transforming, Kafka uses the usual combat suit of the Defense Force. [10]

Respirator Mask: Kafka wears a respirator mask on the battlefield. [10]

Handgun: Kafka carries a handgun. [10]

Pocket Knife: Kafka uses a pocket knife. [11]


  • Kafka's surname Hibino contains the kanji for "sun, day" (日, hi), "ratio, proportion" (比, hi/bi) and "field, wilderness" (野, no).


  • Kafka's likes are the Defense Force, curry, hamburgers, alcohol and cigarettes (he has refrained himself from that before joining the Defense Force). [2]
    • When he was younger, Kafka liked manga and videogames, with one of them being called Guramon (グラモン, Guramon), most likely a parody of the Pokémon game franchise. [1][3]
  • Kafka's kaiju form has the strange feature of making him pee from his nipples. [3]
  • Ever since being transformed into a kaiju, Kafka's heart has been replaced with a core (the weak point present in the body of every kaiju). [28]
  • Kafka's namesake is very likely Franz Kafka, the author of The Metamorphosis. Like Kafka Hibino, the protagonist of the book, Gregor Samsa is suddenly turned into a giant insect and struggles to live in his new form.
    • It's worth noting that both Kafka Hibino and Gregor Samsa found out about their new forms when trying to get up from a bed.
  • As a kaiju, Kafka has the highest Fortitude level seen thus far in the series, at 9.8.
    • Ironically, as a Defense Force Officer, he has the lowest percentage of released power, at 1% (formerly 0%).
  • Kafka ranked #4 in the first character popularity poll and his kaiju form ranked #8.


  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 1.12 1.13 Chapter 1
  2. 2.0 2.1 2.2 Kafka's character profile
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Chapter 2
  4. 4.0 4.1 4.2 4.3 4.4 Chapter 3
  5. Chapter 4
  6. Chapter 10
  7. Chapter 22
  8. Chapter 40
  9. 9.0 9.1 9.2 9.3 9.4 9.5 9.6 Chapter 36 Cite error: Invalid <ref> tag; name "Ch36" defined multiple times with different content Cite error: Invalid <ref> tag; name "Ch36" defined multiple times with different content Cite error: Invalid <ref> tag; name "Ch36" defined multiple times with different content Cite error: Invalid <ref> tag; name "Ch36" defined multiple times with different content Cite error: Invalid <ref> tag; name "Ch36" defined multiple times with different content Cite error: Invalid <ref> tag; name "Ch36" defined multiple times with different content
  10. 10.0 10.1 10.2 10.3 10.4 10.5 Chapter 5
  11. 11.0 11.1 11.2 11.3 11.4 11.5 Chapter 13
  12. Chapter 7
  13. Chapter 33
  14. 14.0 14.1 Chapter 45
  15. Chapter 27
  16. 16.0 16.1 Chapter 11
  17. 17.0 17.1 17.2 17.3 17.4 Chapter 8
  18. 18.0 18.1 18.2 Chapter 18
  19. 19.0 19.1 19.2 19.3 19.4 Chapter 20
  20. Chapter 21
  21. 21.0 21.1 Chapter 35
  22. 22.0 22.1 Chapter 83
  23. 23.0 23.1 Chapter 32
  24. Chapter 19
  25. Chapter 31
  26. Chapter 43
  27. Chapter 24
  28. Chapter 34


Defense Force
Director General
Keiji Itami
Eastern Divisions
First Division · Second Division · Third Division · Fourth Division
Western Divisions
Fifth Division · Sixth Division · Seventh Division · Eighth Division
Northern Divisions
Ninth Division · Tenth Division · Eleventh Division · Twelfth Division
Southern Divisions
Thirteenth Division · Fourteenth Division · Fifteenth Division · Sixteenth Division
Other Members
Juzo Nogizaka
Ariake Maritime Base · Matsumoto Base · Tachikawa Base
Third Division
Mina Ashiro
Soshiro Hoshina
Ebina Platoon
Ikaruga Platoon
Ryo Ikaruga
Itakura Platoon
Nakanoshima Platoon
Tae Nakanoshima
Takao Platoon
Aoi Kaguragi · Haruichi Izumo · Iharu Furuhashi · Akari Minase · Hakua Igarashi · Toma Takanashi
Other members
Konomi Okonogi · Bakko · Kaiju No. 10
Former members
Kikoru Shinomiya · Leno Ichikawa · Kafka Hibino
First Division
Gen Narumi
Eiji Hasegawa
Shinonome Platoon
Rin Shinonome
Tachibana Platoon
Kikoru Shinomiya · Kafka Hibino
Other members
Akira Kurusu
Former captains
Isao Shinomiya
Former members
Hikari Shinomiya · Keiji Itami
Identified Kaiju
Kaiju No. 1 · Kaiju No. 2 · Kaiju No. 3 · Kaiju No. 4 · Kaiju No. 5
Kaiju No. 6 · Kaiju No. 7 · Kaiju No. 8 · Kaiju No. 9 · Kaiju No. 10
Kaiju No. 11 · Kaiju No. 12 · Kaiju No. 13 · Kaiju No. 14 · Kaiju No. 15
Other Kaiju
Mysterious Larva · Unnamed White Monolith Kaiju
Known Species & Types
Known Species & Types list
Related articles
Defense Force · Neutralization Bureau · Izumo Tech
Monster Sweeper Inc.
Masahide Tokuda · Ichitaka Mitsuike · Hiroto Mori
Former workers
Kafka Hibino · Reno Ichikawa · Takamichi Hotaka