|Home world:||Planet Earth|
|First appearance:||Great Decisive Battle! The Super 8 Ultra Brothers|
|Latest appearance:||Shin Ultraman Retsuden Episode 40: "Legend Passed Down! Ginga Spark of Mystery"|
Subtitle: Ultimate Coalesence Monster (究極合体怪獣 Kyūkyoku Gattai Kaijū?)
- Height: 512 m
- Length: 738 m
- Weight: 682,549 t
- Origin: Yokohama
Superior Ultraman 8 Brothers
With all of the King Monsters now destroyed by the Ultra Brothers, the combined number of Kageboshi around the city summoned the souls of all 5 King Monsters and combined them into a towering monstrosity that was Giga Khimaira. Tiga, Dyna, and Gaia, being the only ultras around to fight, tried to battle the towering monster. However, the Giga Khimaira simply swatted away the Ultra trio and bombarded them with their fireballs. However, touched by the 3 ultra undying spirit to protect the ones they love, Hayata, Dan, Goh, and Hokuto, transformed into their respective Ultra forms: Ultraman, Ultraseven, Jack, and Ace. Shortly after releasing the imprisoned Ultraman Mebius. All 8 Ultra Brothers converged to battle Giga Khimaira as one. Unable to stop the 8 Ultras, Giga Khimaira fired its Disaster Burst at the group, only to have its ray reflected back at him, mortally wounding the monster. Outnumbered and weakened, Giga Khimaira tried to flea the planet but was futily pursued by the Ultra Brothers and was weakened even further by Ultraseven's eye slugger. Finally, the 8 Ultra Brothers destroyed the monster by firing their signature weapons simultaneously at the monster destroying it in a magnificent explosion in the Earth's atmosphere.
- Originally, Giga Khimaira was completely different from what its current appearance is now. It was to be shaped like a centaur and composed of a different cast of monsters who were to appear in the film instead of the current cast. The monsters that were going to make up this Giga Khimaira were to be Vakishim, Twin Tail, Astromons, Tyrant, Monsarger, Eleking, Red King, and Gomora. It is be possible that the reason it was rejected was due to the combination being complicated.
- Originally Giga Khimaira was not going to have its current name. Instead was to have the name Ultizaura (アルティザウラー Arutizaurā?) but was given the name "Giga Khimaira" by the public as a name suggestion from Tsuburaya.
- Due to Giga Khimaira's name confusion during pre-production, his name is never fully stated in the film.
- Giga Khimaira's appearance is based on the Greek mythological monsters, the Chimera and Lernaean Hydra.
- According to the original design, it was probably based on the Campe and Centaur, as it had a quadruped body but also arms.
Powers and Weapons
- Durability: Being a fusion of all five monsters Giga Khimaira can withstand many hits from the eight Ultramen's Ultra Beams and not even get a scratch.
- Anti-Gravity Flight: The monster's body can fly effortlessly at high speeds without doing anything.
- Destructor Beam: Giga Khimaira can launch giant fireballs from any of its heads, the colors are based on their signature power:
- Green Fireball: Gesura's head can fire a green fireball from his mouth
- Twin Destructor: Pandon's heads can spit orange red fireballs from their mouths.
- Pandon Hell Magma: A giant version of King Pandon's Double Ray Impact.
- Silver Destructor: Silvergon's head can fire blue fireballs from his mouth
- Gold Destructor: Goldras's head can fire dark redish fireballs from his mouth
- Decadent Hell Laser: From Super Alien Hipporito's head, the four, blue tentacle-like appendages that surround his body it can fire purple fireballs from them.
- Disaster Burst: Giga Khimaira's strongest attack, by combining the powers of every head, the monster can fire a giant heat ray from its chest, it is powerful enough to melt metal and dry up water in just seconds.
- Head(s): King Silvergon and King Goldras
- Torso: Super Alien Hipporito and King Gesura
- Arms: King Silvergon and King Goldras
- Feet: King Gesura and King Pandon
- Tail: King Pandon
Original Giga Khimaira
- Head: Vakishim
- Horn: Astromons, Eleking, Tyrant, Gomora
- Neck: Tyrant
- Tail(s): Gomora, Vakishim and Eleking
- Torso: Twin Tail (upper), Tyrant (lower), Monsarger (back)
- Feet: Red King
- Arms: Tyrant, Vakishim, Astromons
Figure Release Information
Giga Khimaira, along with most of the king monsters, has gone up in value due to only being issued once.