Cesar took Sebastian in as a baby and acts as his adoptive grandfather. He is a loving mentor who teaches Sebastian all he knows about the mountains and the wilderness.

(Source: Wikipedia)

After befriending a white Pyrenees dog he names Belle, Sebastian sets out on a journey to find the mother he knows is still alive.
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(Source: Anime News Network)

He was represented by Tokyo Actor's Consumer's Cooperative Society and after by Aoni Production.

He passed away on January 27, 2014 at the age of 82 due to ischemic heart disease or coronary artery disease.

[Profile](https://www.aoni.co.jp/search/nagai-ichiro.html)