Once again, Dr. Hell has pitted himself against Mazinger Z - but this time, he actually succeeds! Armed with an electromagnetic ray and net, Dr. Hell manages to capture his arch nemesis and put him out of commission; and with Mazinger Z no longer a threat, Dr. Hell then attacks the Photoatomic Research Institute as the last obstacle in his quest for world domination. Boss and Aphrodite are doing their best to defend it, but can they really defeat the man who beat Mazinger Z? Will Dr. Hell finally achieve world domination, or will our hero find a way to break free and fight once more?
The villainous Dr. Hell has amassed an army of mechanical beasts in his secret hideaway, the island of Bardos located in the Aegean Sea. He is capable of controlling mechanized beasts with his cane, and instructs them to unleash devastating attacks. However, Dr. Hell doesn't do all the dirty work by himself; he has his loyal henchman Baron Ashura to carry out his devilish plans. There are also those that will see to it that evil does not prevail. Kouji Kabuto is the young and feisty teenager with a score to settle: his goal is avenging the murder of his grandfather by Dr. Hell. And he might just be able to pull it off, as he is the pilot of Mazinger Z, a mighty giant robot made out of an indestructible metal known as Super-Alloy Z.
Mazinger Z vs. Devilman (マジンガーZ対デビルマン, Majingā Zetto tai Debiruman) is a 1973 animated movie that crossed over two then-popular anime series, both of which were created by manga artist Go Nagai. Note, however, that the movie features alternate versions of events from both series, and is therefore not canonical to either one While fighting with some of his enemies Mazinger Z inadvertently knocks them into a volcano, where they crash into the prison of the Satan race and release Pheonix Jenny! Dr. Hell, learning of this, frees the rest of the Satan race and teams up with them to defeat Mazinger Z, and their ability to fly proves to be too much for our hero. Meanwhile, Devilman is also individually fighting the members of the Satan race, but their combined power is too much for him as well; can Mazinger and Devilman put aside their differences and team up to defeat Dr. Hell and the Satan race?
Mazinger Z vs. The Great General of Darkness (マジンガーZ対暗黒大将軍, Majingâ Zetto tai Ankoku Daishôgun) is a 1974 Japanese mecha animated film that served as an alternative link between the Mazinger Z series and the Great Mazinger series. It basically introduces Great Mazinger to the audience, as well as his enemies from the Mikene Empire. Dr. Hell, Mazinger Z's main enemy, has been defeated and killed in battle, and finally Kouji Kabuto and the rest of his friends can take a break from their duty of defending Japan and the world from evil. However, during a storm after a very hot day in the beach, Boss, Mucha and Nuke have a disturbing vision of a prophet that heralds the end of the world, claiming that the dead will raise and destroy the human race, and that the General of Darkness will attack from air, sea and land. The only hope of defense is an iron fortress, Mazinger. After these words, the strange figure disappears.