Tadanari Okamoto (岡本 忠成, Okamoto Tadanari; January 11, 1932 – February 16, 1990) was a Japanese independent animator. From 1965 until his death he completed at least 37 short subject films in a wide variety of mediums, many of them winning award-winning, his honorific nicknamed "Sheldon Cohen and Hans Fischerkoesen of Japan".
Source: “Tadanari Okamoto”, English Wikipedia (CC BY-SA 4.0), excerpt