Jet Jaguar

Jet Jaguar (ジェットジャガー, 'Jetto Jyagaa') is a heroic robot that appears in the film Godzilla vs. Megalon (1973).

Godzilla vs. Megalon
Jet Jaguar was a human-sized robot created by inventor Goro Ibuki for unknown reasons. Having been stolen by the underground nation of Seatopia, Jet Jaguar's mission was to guide Megalon to Tokyo so the insect kaiju could destroy it. Eventually, however, Goro regained control of Jet Jaguar and sent him to fetch Godzilla from Monster Island. As Godzilla made his way to Japan, Jet Jaguar flew back to the mainland and faced Megalon. Increasing his size to fifty meters, Jet Jaguar attacked Megalon and was winning the battle until the cyborg Gigan arrived to provide Megalon some back-up. The two evil beasts were too much for Jet Jaguar, who was beaten senseless until Godzilla arrived. After a long fight, Godzilla and Jet Jaguar were able to defeat their foes, sending Megalon back to Seatopia and Gigan back into outer space. After the fight, Jet Jaguar reverted to his normal size, and returned to his home with Goro.

Godzilla Island
Jet Jaguar appeared extensively in the TV series Godzilla Island (1997-1998). In the show, Jet Jaguar appears in several different forms: a Silver Jet Jaguar (who was a fighting machine that battled alongside Mechagodzilla and Moguera), a Medic Jet Jaguar (who tended to the injured monsters), and a Fire Fighter Jet Jaguar (who worked to put out the fires caused by the monsters' fights).

Character Concept/Origin
Jet Jaguar was the result of a contest Toho had in mid-to-late 1972 for fans to come up with a new hero for them to use (to capitalize on the many tokusatsu and anime superhero and super robot shows that were all the rage at the time). The winner of the contest submitted the drawing of a robot called Red Arone. The robot resembled both Ultraman and Mazinger Z (both of which were very popular). The robot was renamed "Jet Jaguar" and was set to star in a film vehicle for him, titled Jet Jaguar Vs. Megalon, which pitted him against Megalon (a previously unused Godzilla monster design). However, Toho figured Jet Jaguar would not be able to carry the film on his own, in screen appearance or marketing value (which was a big thing with Toho), so during pre-production, even after doing some tests and storyboards, the project was shut down for several weeks, until screenwriter Shinichi Sekizawa was called in to rewrite the script to add Godzilla and Gigan to have more marquee value. The resulting film, Godzilla vs. Megalon, paired Godzilla with Jet Jaguar against both Megalon and Gigan.

Abilities
The mechanical hero has the ability to alter his size at will, and is skilled at melee attacks. His abilities also include being able to communicate with monsters and flying. He also has floodlights located within his eyes.

Godzilla Trading Battle
In the videogame Godzilla Trading Battle Jet Jaguar can release an "explosion breath" from his mouth.

Godzilla: Save the Earth and Godzilla: Unleashed
Jet Jaguar has also appeared in the video game Godzilla: Save the Earth and Godzilla: Unleashed (where he can increase his size further to 1.5 times normal kaiju size).

In Godzilla: Unleashed, he can release a concentrated blast of energy from his wrists, and from the game's predecessor, Jet Jaguar can spin himself around at extreme speeds, creating a deadly tornado; and while in his smallest combat form, Jet Jaguar has a Reflection Shield put up at all times, meaning that he can't be harmed by weapons, and can even perform a Weapon Reflect, in which he can block a weapon to bounce it back at its source.

Godzilla Unleashed bio
Height:90 meters (variable) Weight:38,000 tons

"Jet Jaguar is a human-sized robot created by a Japanese scientist for unknown reasons. Created with a great potential for learning, Jet Jaguar achieved sentience and began to modify himself and his programming. His most impressive modification has been his ability to change his own size-allowing him to grow large enough to dwarf monsters such as Godzilla. Unfortunately, Jet Jaguar cannot maintain his enormous size indefinitely, and must perodically rest to regain his energies. Jet Jaguar is a reserve member of the Global Defense Force-heroically protecting humanity whenever it is threatened by monstrous threats."

Trivia

 * For the German release of Godzilla vs Megalon, Jet Jaguar is actually stated to be King Kong in a robot suit, which is quite odd, considering the fact that King Kong can't change his size and that he and Godzilla are supposed to be rivals where in this movie, Jet Jaguar and Godzilla team up to take down Megalon and Gigan.
 * The anime series Neon Genesis Evangelion paid homage to Jet Jaguar in the episode "A Human Work"; the episode featured a robot named "Jet Alone", a combination of his final and prototype names.