Wonder 3

Three extraterrestrial agents—Captain Bokko, Nokko, and Pukko—are dispatched to Earth with a grave directive: evaluate whether humanity poses a significant enough threat to the wider universe to warrant total annihilation. Their instrument of planetary destruction is a formidable device resembling a large black sphere equipped with two antennae, referred to interchangeably as an anti-proton bomb, a solar bomb, or a neutron bomb. Though originally humanoid in appearance, the trio assumes the forms of a rabbit, a horse, and a duck upon arrival, having captured these animals as representative samples of Earth's native life. To navigate the planet efficiently during their assessment, the agents utilize the Big Wheel, a tire-shaped vehicle engineered for extraordinary speeds across both land and water, which can also be modified for aerial travel. As they observe human civilization from their animal disguises, the series delves into a variety of complex themes. Remarkably progressive for a manga of its era, the narrative thoughtfully explores pressing social issues, placing particular emphasis on ecological concerns and widespread poverty while weighing the ultimate fate of the world.