Izumo, a half-demon who turns to a demon (under the name Gyuo) at night, but a human at day, is a clever philosopher who likes nature and the world. He is the one who knows how to make a shikon no tama, and a frog-demon with some other demons grab him so that they can start making a fake shikon no tama. Izumo agrees and makes many copies of shikon no tamas which only has small power. He said to the frog-demon that to make the copies like the real one, they had to collect the souls of people with Aramitama (Courage), Nigimitama (Friendship), Kushimitama (Wisdom) and Sakimitama (Love). He appears in episodes 94-95.

Kagome Higurashi, an average ninth grader, gets pulled into an ancient well by a demon, bringing her 500 years in the past to the feudal era. There, she meets Inuyasha, a half-demon who seeks the Shikon Jewel to make himself a full-fledged demon. With Inuyasha and new friends, Kagome's search for the Jewel of Four Souls begins...<br>
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(Source: Viz Media)

His name is sometimes mistranslated as Matsumoto Hiroshi.

He's Korean.  He played dubbing voices for   Shiro from "Fate/Stay Night",  Sasuke Uchiha from "Naruto",  and etcetera.    He played the voices of characters in video games.  One of the famous roles he played was the protagonist called Calintz in the video game called Magna Carta  

[Twitter](https://twitter.com/leetockar?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor_)

Non-anime roles:   
~! - Beast Wars: Transformers (Ravage)
 - The League of Super Evil (Doktor Frogg)
 - Storm Hawks (Wren)
 - George of the Jungle (George, additional voices)
 - Johnny Test (Bling-Bling Boy/Eugene, General, additional voices) !~