Amazing
This was one of the most funniest but in it's own way, emotional movie I have ever seen. It takes the theory of time travel and twists it in such a way, that it almost makes you wonder, what would really happen if humans discovered the secret to travel in any point of history and change it. The characters are really well done, especially the cyborg, who had a really well done speach.
This has also been one of the longest animations I have ever seen(combined with part one and part two).
When you think of block head, you usually think of someone who is really stupid, but when he saves the world from it's timely fate, it kind of makes you think twice.