Godzilla vs. Mechagodzilla II is a fantastic Godzilla film, easily the best Mechagodzilla film, and the best film of the Heisei era.
This film has a very compelling, well-written, intriguing, and elegantly simplicit story. It very much revolves around the monster action, which was a fantastic choice, as it allows for a very action-packed film with a very tightly knitted story.
At the same time, the characters are not left on the back burner, and are likable and interesting. Kazuma Aoki makes for a very charming lead who is initially a goofball but learns to take responsibility for his actions throughout the film and becomes a more competent man. Azusa Gojo is a very sympathetic protagonist with her touching mother-son relationship with BabyGodzilla pulling at your heart strings. Miki Saegusa is just as sympathetic and more developed then ever before as she begins to see Godzilla in a different light due to BabyGodzilla. All of the soldiers, commanders, generals, and scientists at G-Force each have their own motivations and character traits as well, such as the big, gruff Commander Aso who has a very deep vendetta against Godzilla. Even the side characters with not much screen time and very little lines have notable character traits, which is partially due to the really well-done acting.
The new Mechagodzilla design is sleek and awesome, looking smoother and more modern than the Showa incarnation, and it looks even better when it combines with the flying machine Garuda, making it look like an even more powerful killing machine. Godzilla looks just as great as ever, still retaining the iconic look introduced in Godzilla vs. Biollante with another excellent suit that happens to be my personal favorite. Rodan's redesign is more majestic and pterosaur-like, an improvement over his very derpy post-1956 Showa era design. He not only looks cooler, but more natural and believable. And finally, BabyGodzilla is a vast improvement over Minilla, looking absolutely adorable and yet still looking very lifelike, like a real theropod dinosaur infant. The three organic monsters are brought to life in such a way that they have their own personalities and could be considered actual dynamic, well-rounded characters on their own. Godzilla has his character ark here, as he starts out being the same rage-filled nuclear leviathan from the previous films only to become a father that can actually show compassion by the end of the film, as he spends the majority of it searching for BabyGodzilla, only to cross paths with Rodan and Mechagodzilla whenever he tries to do so. His goal is clearly to unite with and protect the infant Godzillasaurus to raise him as his own son, and he risks life and limb over it. He's still a badass throughout the film, but we also get to see a bit of his softer side. Rodan also has an emotional attachment to BabyGodzilla, but in a different way; since they were born in the same nest, he sees BabyGodzilla as his little brother and therefore does everything to protect him. BabyGodzilla is the heart of the film, as an innocent and intelligent being that cares deeply about those he sees as his parental figures. On the other side of things, Mechagodzilla moves and acts realistically for a robot, never making it seem like a living thing and therefore solidifying the theme of life vs. artificial life. The decision to make Mechagodzilla lifeless also supports this theme and, along with BabyGodzilla and our main characters, helps drive the audience to an emotional connection to the monsters as the film progresses.
One of the most powerful and unique aspects of the film is indeed the conflict it brings about within the characters and even the audience. It begins with Mechagodzilla being the good guy and Godzilla being the bad guy, but by the middle, it becomes greyer rather than black and white, with both G-Force and Godzilla having reasons to be doing what they're doing and both are reasonable from their point of view. This also creates high stakes and tension with the battles between Godzilla and Mechagodzilla, making for some of the most gripping fight scenes in the franchise.
The special effects are incredibly solid and well-done, with some astounding attention to detail. Despite the film's abundance of action scenes, there aren't any extremely noticeable lapses in the quality of the visual effects: all of it looks top notch (with the exception of some brief funky matte shots that don't look the best, and the prop used when Mechagodzilla is flying does look kind of wonky, though definitely better then the Showa one). In particular, the animatronic heads for all three monsters look notably impressive and extremely organic. The film is also packed with tons of exhilarating and memorable action sequences that are spread out so well that it's very well-paced and highly entertaining. Godzilla and Rodan's battle on Adonoa Island is one of the most exciting fights in the franchise, and the battles where Godzilla and Rodan fight Mechagodzilla are very excitingly choreographed and directed and have no shortage of physical brawling.
And finally, Akira Ifukube's musical score is brilliant; while he usually always delivers fantastic scores, this one is particularity good, with very many memorable, riveting, and haunting yet beautiful pieces.
Overall, Godzilla vs. Mechagodzilla II is an absolutely fantastic Godzilla film all around. It succeeds in practically every category and therefore is definitely one of the finest and most consistently entertaining entries in the entire franchise.
