Mazinkaiser is a oVA anime that premiered in fall 2001, produced by Brain's Base.

About the production: the story comes from a manga, there are 7 episodes of about 30 minutes and its current status is "finished".

Its main genres are action, mecha and sci-fi, with themes such as Super Robot, Shounen, Episodic and Robots.

On AniList, Mazinkaiser has an average score of 72%, a good score, and appears on 4,830 users' lists.

The franchise continues in or follows from: Mazinkaiser: Shitou! Ankoku Dai Shogun.

In one of their epic battles, the Mazinger Team suffers a crushing defeat at the hands of Dr. Hell and his minions after Mazinger Z is stolen and its pilot, the legendary Kouji Kabuto, is rendered missing in action. Just when Dr. Hell's second-in-command Baron Ashura uses Mazinger Z against our heroes, Kouji makes a surprise return in Mazinkaiser - an all-new Mazinger with heavier armor and deadlier attacks. (Source: Anime News Network)

Official synopsis from AniList.