Jinenji

Jinenji (地念児) is a half-human, half-horse demon who lives in a hut with his human mother. Together they grow a variety of medicinal plants, including some known for being powerful against poisons. The field where they grow the plants is his inheritance from his demon father.

He is first seen when Kirara is poisoned by Naraku's shoki and Kagome and InuYasha travel to the village to find a cure. When they find him, they also help to clear his name as he was being falsely blamed for people's deaths in the village purely because of his demon blood. Jinenji is depicted as a gentle giant who is initially scared of humans because of the way the villagers treat him. His arms in particular are covered with scars from attacks on his person. Upon meeting Kagome, he is surprised to find that she is not frightened by his appearance at all and willingly helps him collect herbs. (Indeed, she is so scared of a caterpillar on an herb that he has to remove it for her.) InuYasha, having also dealt with abuse at the hands of humans when he was a child, attempts to convince Jinenji that he needs to be more forceful towards the villagers, especially after he rescues them from a demon. In the end, Jinenji decides to continue his more gentle approach, giving the men injured during the demon attack the herbs they need to heal themselves. Out of guilt for having treated him so badly before he had saved them all, the village men help Jinenji and his mother rebuild their destroyed hut and clean up the herb field.

Like InuYasha, Jinenji becomes fully human one day a month. He spends the day hidden away in the hut, under a blanket. Likely only his mother knows what his human form looks like, as he refuses to let anyone see his human form, but it does appear that he becomes a larger-than-average human. In the animé: during one of these times, Rin visits his home searching for the cure to heal Jaken, who was poisoned by the saimyoushou while protecting her.

Jinenji is obviously very strong, as his body suppports a large amount of muscle mass, but his one known demon ability allows him to become even stronger. Activating his power makes his entire body glow with blue energy, and he was able to decapitate a large demon by wrapping his arms around its neck and squeezing with brute force. He then destroyed the head with a single, devastating punch, making it virtually explode into dozens of small chunks.