Thunder 3

The Amazing 3 is an Osamu Tezuka manga and a black and white anime series. It involved the adventures of three agents from outer space who were sent to Earth to determine whether the planet, a potential threat to the universe, should be destroyed. The instrument of destruction is a device resembling a large black ball with two antennae that is variously called an anti-proton bomb, a solar bomb, and a neutron bomb. Although the three agents (Captain Bokko, Nokko, and Pukko) are originally humanoid in appearance, upon arrival on Earth they take on the appearances of a rabbit (Bokko), a horse (Nokko), and a duck (Pukko) that they had captured as examples of Earth life forms. While on Earth they travel in a tire-shaped vehicle capable of enormous speeds called the Big Wheel, which can travel on both land and water (and, with modifications, through the air). The series tackles a number of issues which were surprisingly progressive for an animated cartoon of that period; particularly ecological concerns and poverty.

One day while going to high school recuperative classes, Junpei notices a weird rock which he then decides to carry with him; but during classes the rock started talking! "You guys are the heroes of the prophecy! I want you to get rid of the devils of destruction." Suddenly a bright light shined from the rock and when they woke up they weren't at school anymore, they were transported to a world of animation! Afterwards they get challenged by a Sphinx that appeared out of nowhere, if they can't solve the Sphinx puzzles they will not be able to come back to the real world. Can these 5 return to the 3 dimensional world?

Ryo, Gawl and Koji are 3 young boys who travel back into the past with only 1 objective: change history. In their time they discover that their country, Kubere, uses genetically enhanced persons called generators as a military tool. These generators are the cause for the Third War which kills most of the human population. Now Koji, Ryo and Gawl are there to change all the events.

Souya Kuroi has dreams of people with superpowers fighting a massive dragon in the sky, but his real life is almost as weird. He's had amnesia for about two weeks and been taken in by a maid and an anthropomorphic cat. When a UFO in the shape of a stuffed bear approaches Sorimasaka City and other metros around the world, he's startled to see seven rainbow-sparkling heroes zoom out to confront it – just like in his dream. Even weirder, the maid wants him to leave his shelter to confront these heroes and take the source of their power.