Great Mazinger is the successor to Mazinger Z and titular robot of the Great Mazinger anime and manga. He was created by the thought to be deceased Dr. Kenzo Kabuto alongside Venus A. Tetsuya Tsurugi is Great's main pilot, but both Kenzo and Koji Kabuto have piloted him once each.

Great Mazinger largely resembles his predecessor, but has a few minor differences besides larger height and weight. Compared to Mazinger Z, Great has a higher crown, horns pointed upwards, a V-shaped heat sink and has pointed fins on his appendages. He features a built-in retractable red Scrander called the Scramble Dash on his back.