Kōtatsu

was an ink painter who used the Shikon no Tama on his ink that contained his blood.

History
He fell in love with a princess who ordered her guards to stop beating him. Kōtatsu was then thrown into a river.

The lord sent an army after Kōtatsu, who used his hell paintings to defeat them. Inuyasha killed some of the demons, and the rest were absorbed by Miroku. Kōtatsu summoned and rode a three-headed snake demon, but Inuyasha was able to slice the ink container, which contained the Jewel Shard. Without it, his snake demon was destroyed. Kōtatsu stabbed himself in the arm, telling his ink to take his blood and return to power. Instead the ink devoured his blood, destroying him.

Powers & Abilities
He could summon a demon brigade using his paint art. This demon painting came alive and was controlled by him. He used these demon paintings to destroy an army.

Manga vs. Anime

 * His name is not revealed in the anime.
 * His origins are revealed in the manga. He is a foreigner who originated from the capital. He is fascinated with paintings of hell. He goes so far to gain his inspirations for his painting from the corpses on a battlefield. It is then that he comes across a shard of the Shikon no Tama. He discovers that his paintings can come to life after dowsing the shard in ink.
 * In the manga, he is beaten up along a path by the lord's vassals for looking at the princess. In the anime, he is beaten at the palace gates for his claims of killing an entire band of mercenaries which everyone believes to be false. Furthermore in the anime, he is tied up and thrown into a river after he is beaten up. In the manga, he is left alone afterwards before a brief interaction with Miroku.
 * In the manga, Kōtatsu uses his magic ink in an attempt bewitch the princess to become his. In the anime, the ink obeys Kōtatsu's subconscious desires while he is asleep by manifesting as yōkai in order to capture the princess.
 * In the manga, Kōtatsu unleashes is yōkai army to capture the princess. In the anime, he unleashes them to attack the army of the princess's father that were planning to steal his shard of the Shikon no Tama.
 * In the manga, he begs Inuyasha to spare his life and offers to give him his ink pod that contains the jewel shard. This is a trick to lower Inuyasha's guard so his snake yōkai can attack him while he escapes. In the anime, Inuyasha cuts the ink pod from his waist and destroys the pod afterwords.
 * In the manga, Kōtatsu's ink devours him of its own accord. He begs Inuyasha to save him before he is completely absorbed by the ink. In the anime, he willingly offers his blood to the ink in the hopes of fusing with it before he realizes that the ink is devouring him.

Trivia

 * His seiyū, Bin Shimada, voiced several characters from Rumiko Takahashi's previous series. They include Mizunokouji Tobimaro from ', Sentaro Daimonji and The Oni Priest from '.

Media appearances
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Manga

 * Chapter 55
 * Chapter 56
 * Chapter 57
 * Chapter 58

Anime
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 * Episode 17