Ikuo Nishikawa

In the near future, the Earth's oceans have risen and flooded most of the sea-lying land on Earth. The rogue scientist Zorndyke caused the flooding, which killed billions, and most of humanity's remaining cities have been attacked or destroyed by Zorndyke's army of "hybrids". Humanity's best hope for a resolution to the conflict lies with its submarine forces, among which is the focus of the story, Blue Submarine #6. (Wikipedia)

One year since Eiji's climactic but unfinished battle with Gaia during the first Battle Arena Toshinden tournament, the original eight participants of the tournament as well as other fighters find themselves targeted by a mysterious organization for sinister purposes, and it becomes up to Eiji to solve the mystery, save his friends, stop the organization and locate his long-lost brother, Sho. (Wikipedia)

Yonosuke Hikura appears to be an ordinary high school student. Yet he has inherited the important role of protecting the harmony between Heaven and Earth. With the help of the magical sword Chitentai, and Tsukinojo Inbe, he courageously battles the demons, sending them back to the Earth World, from which they have escaped. (animenewsnetwork.com)

Signal, a robot companion built for Nobuhiko, is attacked by Pulse, one the its creator's previous prototypes. Reprogrammed by Dr. Otoi's mysterious rival, Pulse is loaded down with weapons and sent on a mission by Otoi: steal the most recent robot technology, and obliterate anything that gets in his way. (animenewsnetwork.com)

The brilliant Dr. Azuma created many robots to aid humankind. However, during a thunderstorm his lab was struck by lightning, corrupting the programming of one of his robots, BK-1, who renames himself Braiking Boss and declares that instead of serving mankind, mankind will now serve him! He brings other robots together into an overwhelming army bent on enslaving the human race. Tetsuya, Dr. (myanimelist.net)

Shotaro Kaneda is a young boy whose dead scientist father created the giant robot Tetsujin 28 after realizing the chances of attacks from outer galaxies. Shotaro has possession of the only controller, kept in an attache case, which enables him to have direct command of the all mighty Tetsujin 28. If the controller goes into the hands of the enemy, this could lead Tetsujin 28 to fight for villains who want to destroy The Earth. Whenever peace in this world is threaten ... (animenewsnetwork)