Mashin Eiyuuden Wataru
Japanese title: 魔神英雄伝ワタル
Type: TV
Episodes: 45
Premiered: spring 1988
Source: Original
Genres: Action, Adventure, Comedy, Sci-Fi
Studios: Sunrise
Producers: Atelier Musa
Duration: 24 min per ep
Rating: G - All Ages

A 9-year-old boy named Wataru Ikusabe is magically transported to a magical realm of the gods called Soukaizan which he is supposed to save. In his quest to save the realm, he manages to transform a clay sculpture into a somewhat autonomous (small) Super Robot.

(Source: Wikipedia)