Kotetsu

Kotetsu is a supporting character in Demon Slayer: Kimetsu No Yaiba. He is a young villager from the Swordsmith Village. His ancestors built the battle doll Yoriichi Type Zero.

Appearance
He wears a striped yukata and a Hyottoko mask (with notable eyebrows) that fully conceals his face. The kanji for Hyottoko is written on the back of his yukata.

Personality
Kotetsu is a kind and energetic child. He is full of passion for his job of maintaining the battle doll Yoriichi Type Zero, even though he has not yet mastered the repairs. This causes him much grief and fear but after meeting Tanjiro Kamado he realizes that he cannot give up.

He is often very frank and brutal at times. Despite this, he means the best and tries his hardest to help those around him.

Abilities
Overview: Despite his young age, he has shown to be an skilled teacher and trainer, as shown when he asks Tanjiro to face Yoriichi Type Zero. Kotetsu also corrected the posture and mistakes that Tanjiro made and how he had survived this way, which indicates that Kotetsu has had some trouble with demons.

Trivia

 * Kotetsu's actual face bears a striking resemblance to his mask, so much so that people say he doesn't really need to wear the mask.
 * He is an orphan with no siblings.

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