Kim Gu is the Cartoon Character Type Personal Attribute of Tac.


Kim Gu, 'The White Western Tiger', transferred to Arang industrial high school, a place where 'survival of the fittest' is law.

Kim Gu wanted to be a 'good student' and keep the promise he made to his father who told him: "do not fight in school". He tried to stay as quiet as possible even when he was bullied. Inevitably, he used his fist and unintentionally showed his true power to one of the biggest gang factions in the district, the Cheong-Cheon society. Once he showed his true power, there was no going back.

Unlike most delinquents who smoke, Kim Gu is usually seen biting candy as "smoking is harmful to the body".

He is a close-range fighter that utilises powerful fist attacks. Sometimes, when he uses a big technique the name of the technique is written in big red colors.


  • J.R.I.R. Crush: Tac delivers a powerful blow that is capable of killing a Field Boss.
  • J.R.I.R. Crush - Teethbreaker Lv.3: Tac delivers a blow whilst moving at high speed towards the target. It is presumably 3 times stronger than the original.
  • Main Character_Berserk: A Hidden skill straight out of a cartoon character. It is a passive skill that is activated when one of Tac's precious comrades dies. Tac becomes invincible and very powerful powerful for a certain period of time.

Image Gallery

Notes & Trivia

  • Kim Gu is the main character of the Webtoon series, The Boss.
  • This is the first Cartoon Character Type Personal Attribute that was introduced in the series.
  • Tac's 'Scarface' jacket is identical to that of Kim Gu's.
  • The Tiger symbol seen when Tac was battling Zhang Fei in Episode 105 was a reference to Kim Gu, who is known as the White Tiger.
  • Kim Gu was not explicitly mentioned in the Hardcore Leveling Warrior Webtoon but it is heavily implied that he is the Personal Attribute of Tac due to the similarities in personalties, attire and skill set.
  • Due to a tracing controversy, 'The Head' Webtoon has been permanently discontinued by Naver. Tac has been removed from the Hardcore Leveling Warrior series.


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