Microid SMicroid S.

Microid S (ミクロイドS, Mikuroido Esu) is a manga series written and illustrated by Osamu Tezuka, published in Akita Shoten's Weekly Shōnen Champion from March to September 1973. It was later adapted into an anime series by Toei. The anime adaption of Tezuka's manga Microid Z (ミクロイドZ, Mikuroido Zetto), replaced the letter "Z" with an "S" as to match the initial letter of the show's sponsor, Seiko.