Jiger's History
Jiger is an ancient demonic creature that once inhabited the lost continent of Mu. She was awakened in the present day when a statue known as the Devil's Whistle was removed from her island.
After the Devil's Whistle was removed from Wester Island, Jiger made her first appearance and got Gamera's immediate attention. The first of several fights ensued, and Jiger won by shooting projectile quills from her face. The quills impaled Gamera's arms and legs, piercing all the way through and preventing Gamera from withdrawing his limbs into his shell and taking flight. To make matters worse, Jiger knocked Gamera onto his back to prevent him from moving. He pulled himself up with his tail using a large rock and then removed the offending quills from his limbs and was finally able to fly after Jiger.
Meanwhile, Jiger was actively seeking the statue, because it was making a horrible ringing sound that was causing her tremendous pain. Jiger let nothing impede that hunt as she split two ships in half and started tearing through Osaka. Scientists were beside themselves as Jiger displayed another weapon: a heat ray that vaporized not only flesh but entire city blocks. The JSDF did make a token effort to kill the monster, but her quills knocked down the F-104 fighters, ending the JSDF's involvement.
Gamera returned for round two as the fight was witnessed by several children. Gamera knocked Jiger around and appeared to have the upper hand until Jiger pulled Gamera to her. Jiger extended a stinger from her tail and inserted the barb into Gamera's shoulder, laying an egg inside his lung. Gamera staggered away, roaring in agony. Finally, he barely made it to the bay and his body turned a chalky white color, almost like ice. Gamera was presumed to have been killed at this point as Jiger headed straight to the World's Fair. Jiger finally obtained the statue, and threw it into the ocean, ending the painful noise.
The scientists were checking out possible causes of the noise, as it affected humans, causing temporary insanity. The children convinced them to do a medical exam on the comatose Gamera, where it was discovered that there was a dark spot on one of his lungs. One of the scientists served as a zoo director and realized that the spot might not be a fast-spreading cancer, but actually a larval Jiger growing in Gamera's lung. An operation was needed to remove the threat, so the children took the initiative by taking a walkie talkie and a mini-sub. Communication was established with the kids and they entered Gamera through his open mouth, and after almost going into his stomach, they arrived at the problem lung. The children were able to exit the sub and walk around in the lung. There, they discovered the baby Jiger.
The baby looked like its mother, except that instead of shooting quills, the baby squirted sticky goo. But the baby had a weakness just like its mother: white noise. The kids discovered this was actually a fatal weakness and managed to kill the baby using static from their radio. They left Gamera's body and reported their findings to the scientists. They rigged up large speakers to keep Jiger at bay, as well as figuring out that power would have to also be run into Gamera, who could not recover on his own. The children made a final trip inside Gamera to hook up a set of power lines directly to his heart.
Jiger was kept still by the speakers playing the white noise. It was not enough to kill Jiger, but bought enough time for the other plan to start. Gamera was subjected to high voltage shock before the electrical grid overloaded. It was enough that Gamera revived on his own.
Gamera flew over to the World's Fair for the final battle. Jiger tried every weapon she had, but Gamera merely retracted into his shell when the quills started flying. Jiger then used her heat ray. It didn't affect Gamera's shell or even skin, but the noise from it did enough harm to where Gamera had to block it out by stuffing telephone poles into his ears. After using a club-shaped building to crush Jiger's tail, destroying her stinger, Gamera body-slammed Jiger from a great height, which lodging her underground and bought Gamera the time needed to go into the ocean to retrieve the Devil's Whistle from the sea floor. Jiger, enraged by the statue's return, attempted to pounce on Gamera, but Gamera only taunted Jiger with the Devil's Whistle, who tried in vain to catch Gamera and retrieve the statue. Gamera finally ended the fight by throwing the statue at Jiger, which embedded itself in Jiger's skull, killing her.