Bastard!! (1988): In volume 19, Uriel transforms itself to fight a demon. An effect of that transformation is one half of his body changing color. Dark Schneider starts mocking him, calling him -among other things- a Baron Ashura rip-off.
Cannon God Exaxxion: When Hoichi infiltrates his school incognito, he uses the surname Kabuto.
Live A Live: In the Near Future chapter which is entirely a send-up to mecha genre anime and manga, the intro has the chapter's protagonist Akira appear as a pair of glowing eyes in the darkness and asking the player how they would use the ability to read minds like how he can. This is essentially the first page of the Mazinger Z manga, where Kouji talks to the reader and asks what they would do if they could pilot a giant robot. The remake takes this further by assigning Kenji Akabane as his Japanese VA as a reference to his role as Kouji Kabuto in Shin Mazinger.
Molly of Denali: In "The Worm Turns," when the kids search up images of giant ice worms, they find a picture of a video game character called Boltronoman, who looks identical◊ to Mazinger Z.
The album name "Buruguduystunstugudunstuy" by Parokya ni Edgar is allegedly based on how the band misheard the name of Mazinger ally Boss Borot, the comic relief robot made of scrap metal that comic relief character Boss forced the Three Scientists to build to compete with Mazinger Z.
As recently as 2021, Parokya had a batch set of parody t-shirt designs featuring Super Robot anime like Mazinger Z, Voltron, Daimos, and Voltes V.
Ramen Fighter Miki: Onimaru is named after the school bully of one of the episodes.
Sentai School: One of the characters, Koji Alcor, is a spoof of Kouji Kabuto.
One of the earlier bosses from Space Bomber is a giant Tin-Can Robot who, after receiving enough damage, transforms into a giant floating head that resembles Mazinger's.
Tech Romancer: Junpei Todoroki and G. Kaiser are blatant Kouji and Mazinger expies.
Urusei Yatsura: During a dream sequence Ataru was a robot fitted with a Rocket Punch.
The monster Islanda from The☆Ultraman is a rather blatant expy of Dragonsaurus from Grendizer, Getter Robo G, Great Mazinger: Kessen! Daikaijuu released three years earlier.
Toy Fighter, a fighting game where all it's characters are Living Toys, have the last boss, Toy King, a rather blatant Captain Ersatz of Mazinger Z.
Tropical-Rouge! Pretty Cure: Episode 34's Monster of the Week is a parody of Mazinger Z that uses its various attacks such as Breast Fire, Photon Beam, Rocket Punch, along with utilizing its own Jet Scrander.
of Mazinger Z. Both of the lead girls in question are named Erika, even.
