Thread:Coolot1/@comment-4327179-20200523233851/@comment-4327179-20200524004712

Now here is some info about Gaira's history starting with War of the Gargantuas:

War of the Gargantuas

A fishing vessel under attack by a Giant Octopus found itself saved when Gaira appeared to drive off the cephalopod. Unfortunately for the crew, he then pursued and ate all but one of them. Gaira continued to menace the Japanese shores. The government contacted Dr. Paul Stewart, one of the scientists who raised a monster called Sanda, to ask if he and Gaira were one and the same. Skin samples from Gaira seemed to indicate that they were, although Stewart and his assistant Akemi found Sanda's footprints deep in the Japanese Alps. Before long, Gaira attacked Haneda Airport, devouring a woman before the sun emerged from behind the clouds, driving him back into the sea. After he attacked a nightclub in Tokyo, the JSDF began planning his demise. Helicopters lured him into the firing range of Trip Wires and Maser Cannons, which chased him into an electrified lake. Writhing in pain, Gaira seemed doomed until Sanda came down from the mountains to rescue him.

Far from humanity, Sanda helped Gaira recover. After regaining his strength, Gaira began hunting humans once more, pursuing a group including Akemi, who stumbled off a cliff while fleeing from him. Remembering his old friend and surrogate mother, Sanda rescued Akemi, but broke his leg in the process. When he returned to Gaira and discovered evidence of his diet, Sanda battered him with a tree. Their short brawl led to Gaira retreating back to the ocean.

Having determined how Gaira emerged from Sanda, Stewart and Akemi urged the military not to launch an all-out attack against them, as it could potentially create millions of Gargantuas. Gaira, now associating lights with humanity, raided Tokyo in search of his next meal. He nearly ate Akemi again before Sanda arrived on the scene. After failing to reason with his brother, Sanda had no choice but to battle Gaira once more. Building after building fell as the JSDF joined the fray, concentrating its fire on Gaira. Eventually, their duel spilled into Tokyo Bay and out to sea. Helicopters rained explosives down on them, only to be outdone by nature. An underwater volcanic eruption soon consumed the two brothers, still locked in combat.