Gekiman!: Mazinger Z no Shou

An autobiographical manga about the career of Nagai Go and how his most known works were born. How a young Nagai Go, struggling to break out of his typecasting as the go-to guy for gag manga by breaking into the sophisticated world of story manga. *Note: This part of Gekiman! mostly focuses on Devilman.*

An autobiographical manga focusing on the creation of Great Mazinger.

One of the first Super Robot manga and the one that introduced most of the traits of the Mecha genre. Constructed with the Super-Alloy Z, Mazinger was built by Professor Juzo Kabuto as a weapon against the Mechanical Beasts of the evil Dr. Hell. Koji Kabuto, the grandson of Professor Kabuto, becomes the pilot of Mazinger Z when his grandfather is killed, and battles from there on against Dr. Hell and his allies. This is the first series that introduced the concept of a pilot inside a Mecha, which all series from then on have followed.

A remake of the original Mazinger Z manga in celebration of its 50th anniversary. This manga is the in-universe story of the manga that Gekiman creates in the autobiography manga Gekiman! - Mazinger Z Chapter

After being warped from their universe to that of Mazinger, the Transformers join the fight between Mazinger Z and Dr. Hell's army of mechanical beasts. A crossover between Mazinger Z and the Transformers series, with each chapter drawn by a different artist.