Mazinger Z tai Devilman

The fluid and vibrant animation of this film is of special note; even though it was made the same year as the last episodes of Devilman and Mazinger, it far surpasses them both on a technical level.
I wouldn't mind having Sirene destroy my Tokyo, if you know what I mean ;)
And General Zannin is the man, as always.

Crossover movie. Despite the name saying vs, they actually team up in order to beat the bad guys of each stories who have also allied together. The plot is nonsensical, and requires retcons in order to work. It's completely written in a way to make the two stories merge together. The dialogue is also pretty wank. With that said, it has the type of action that both series needed.

One of the biggest problem with the 70s Tokusatsu show is their villain of the week format. Despite facing a major villain that's trying to take over the world, said bad guy always sends one of his ... minion at a time instead of many. Now, there's a couple of reasons for this. One of which being that it would make fight scenes harder to draw and animate, thus taking more time and more money. The other being that they couldn't draw out the series for as long as possible.

This movie rectifies that and gives fans what they had been wanting by having both protagonist take on 10 or so Kaijus at a time, which is pretty cool and fuels the big scale fight scenes that many fans crave. Other than that, it's pretty much like any other episodes of either series, albeit, with better visuals. It's a fun short watch, but that's about it.

This movie combines multiple different Go Nagai series, specifically Mazinger Z and Devilman. The plot is pretty straightforward; the Devilman demons are treated like kaiju, and the movie features a typical "bad guys teaming up" storyline. I found that I was able to enjoy the movie without any prior context, as there was not much character or relationship development, and not much happened in terms of character or story progression. The animation quality varies throughout the film, but the character designs are excellent for its time. It's always a pleasure to see Go Nagai's design work animated, even if it's toned down for a younger ... audience.