Rai (July 19, 1991) – This Day In Comics – Valiant
In 4001 A.D., a massive machine known as the Host covers the entire island of Japan. Fifty billion Japanese dwell inside this mighty construct, which is, in fact, a single, enormous robot. The populace dubbed it “Grandmother” because of its clearly benevolent desire to care for and protect the people of Japan. To insure her own safety, Grandmother created a security force of one, her Spirit Guardian. It is called Rai, the kanji word for “spirit”. Rai is the hereditary defender of the Host – its living immune system.
Rai draws weapons from his own body to protect the people of Japan and his creator Grandmother, the sentient artificial intelligence that controls Japan. The line of Rai were created by Grandmother in the image of the 20th century hero Bloodshot. She hoped to inspire her people by invoking his heroism.
He first appeared in a flipbook back-up feature in Magnus Robot Fighter #5 (July 19, 1991).