Hedorah is a kaiju formed from pollution, the main antagonist of Godzilla vs. Hedorah and a supporting antagonist in Godzilla: Final Wars.
He was portrayed by Kenpachiro Satsuma who would later play Gigan and then the Heisei Godzilla.
Godzilla vs. Hedorah (1971)
Hedorah was an alien that came from space and began feeding on pollution, soon entering a giant monster form. Its action eventually attracted the attention of Godzilla who engaged Hedorah as it was feeding from a smokestack. At first the King of the Monsters had the advantage since the Smog Monster was in a younger form. The two continued to fight in a series of battles across Japan with Hedorah evolving along the way, eventually gaining a flying form that allowed it to destroy numerous factories and spread acidic mist across Japan. Eventually the Smog Monster gained its final form, a humanoid pile of sludge, and engaged Godzilla in a final battle near Mt. Fuji. Hedorah almost emerged the victor thanks to the acidic and poisonous quality of its body and powerful eye beams. However the humans attempted to try and stop the Smog Monster by building a set of electrodes near the battlefield, which could dry out Hedorah since it was made of sludge. During the fight, the Smog Monster succeeded in knocking out Godzilla and was drawn to the electrodes. Unfortunately for the plan, a fuse blew out and the electrodes didn't work. However the King of the Monsters came to the rescue and used his atomic ray to restore power to the electrodes. This badly weakened Hedorah and it attempted to escape, but Godzilla knocked it back into the electrodes, drying it out completely. However the Smog Monster had some wet sludge left inside and the King of the Monsters tore into it, releasing the sludge to the power of the electrodes. Hedorah was finally defeated, but at the price of Godzilla losing one of his eyes and having his right hand burned to the bone. Additionally another Hedorah was shown in some water with the caption "And yet another one?".
Godzilla: Final Wars (2004)
Hedorah reappeared in Godzilla: Final Wars where it and Ebirah were blasted out of Tokyo Harbor by Godzilla and sent crashing into a building with the shrimp monster's claw impaling one of Smog Monster's eyes. The two are then destroyed by a blast from Godzilla's atomic ray. It is unknown if the Xiliens were using Hedorah as part of their invasion.
Hedorah is indifferent with destruction and deaths that he left behind, whether the said destruction and deaths that he caused was done on purpose or his own bizzare biological properties that hazardous to any unfortunate lifeforms that stood on his path. In spite of this, Hedorah proved to have villainous side: In the fight against Godzilla, he laughs while smothering Godzilla in sludge during their fight. Hedorah also possesses awareness as in Godzilla: Final Wars, in spite of being brainwashed, he was visibly waving his arms in panic before Ebirah had his claw pierced his eye by Godzilla, pinned him before blasted by the latter's atomic breath.
- WatchMojo.com listed Hedorah as #7 on their "Top 10 Godzilla Villains" list.
- Hedorah was meant to be playable in the two Godzilla games Godzilla: Save the Earth and Godzilla: Unleashed, but was ultimately scrapped due to limitations of the game consoles. Hedorah did not make his playable debut until Godzilla: The Game.