In the near future, robot technology has advanced to the point of self-awareness. Under the leadership of the Black King, machines have decimated the human population and conquered the world. Those who survived the early holocaust have been enslaved for life. But throughout the hardships, a lone hero appears as the savior of mankind. He is Casshan - a fusion of man and machine driven to combat Black King and his forces to the end. (Source: ANN)

The story begins from a boy named Kino, a junior high student. Every one hundred thousand years, the Seven Parrallel Universes will line in one path and be connected for seven days. And every this time, there will be wars between different civilizations of universes, as there will usually be someone with extremely strong power, who wants to conquer all universes. But at the same time, a team of legend warriors selected from every universe will appear to stop this, and they are the Army of Ultra Beast Force. This time, Mio, the strongest lord of all universes is going to awake. As one of the selected warriors, Kino is and his friends are trained by Master Wyatt, travel through the multiverse, meeting new friends and rivals, and try to stop Mio. With his powerful Dark Energy Locker which allows him to become a Robo-Soldier by releasing the potential dark energy inside himself, he encounters evil enemies along the way. (Source: RevEvolution Wiki)

Dr. Saotome returns from the dead after being seemingly murdered by Getter pilot Nagare Ryoma and threatens the world with his ultimate creation: the Shin Dragon. Ryoma reluctantly teams up with his former co-pilots Jin Hayato and Tomoe Mushashi to combat Dr. Saotome. The pilots must also deal with the mysterious Invaders, aliens that have the ability to possess humans and warp their flesh to form hideous creatures. (Source: Nihon Review)

3 kids meet 5 micro-sized superheroes from another world who enlist in their aid in fighting off alien invaders.