Mashin Eiyuuden Wataru is a tV series anime that premiered in spring 1988, produced by Sunrise.

About the production: there are 45 episodes of about 20 minutes and its current status is "finished".

Its main genres are adventure, comedy, mecha and sci-fi, with themes such as Shounen, Super Robot and Isekai.

On AniList, Mashin Eiyuuden Wataru has an average score of 66%, a good score, and appears on 1,669 users' lists.

The franchise continues in or follows from: Shin Mashin Eiyuuden Wataru Majinzan.

The story is about a 9-year old boy named Wataru Ikusabe that 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)

Official synopsis from AniList.