First Lieutenant Akane Yashiro (家城 茜 Yashiro Akane) also appearing in a minor role in its 2003 sequel Godzilla: Tokyo SOS. A Type 90 Maser Cannon operator for the JSDF's, Akane unintentionally caused the death of her comrades in a battle against Godzilla in 1999. Subsequently reassigned to a desk job, Akane was recruited to become a pilot for the Kiryu Squad in 2003, receiving the rank of Second Lieutenant. In 2004, Akane was preparing to travel to the United States to receive further training. Akane was present at a banquet honoring the new team piloting Kiryu, but was very distant from everyone else, and wandered off to Kiryu's hangar. Yoshito Chujo, Kiryu's lead mechanic, followed Akane and spoke to her. Akane told Yoshito that she felt great pity for Kiryu, as she believed he didn't actually want to fight Godzilla. Akane asked Yoshito to take good care of Kiryu, and then left. Akane lost her parents at a very young age and grew up believing she was a mistake and should not exist. Eventually she came to be in the employ of the JSDF On a mission against Godzilla in 1999, Akane accidentally kills upwards of eight members of the JSDF by bumping them into the path of Godzilla. Afterwords, she is retired from technician work to be a librarian in the JSDF archives. Four years after this incident, she is taken out of her desk job to be a part of the Kiryu team. After Kiryu is badly damaged and left, for the most part, inoperable, she climbs inside of Kiryu to control him manually. Throughout the film, she develops a friendship with Sara Yuhara, with whom she shares many similarities.

Gigan (ガイガン Gaigan) is an alien cyborg kaiju who first appeared in the 1972 - 2004 Toho Godzilla film Godzilla vs. Gigan. Personality: Naughty, Cruel and even Evil

Mecha-King Ghidorah (メカキングギドラ Meka Kingu Gidora) is a cybernetic kaiju who first appeared in the 1991 Godzilla film Godzilla vs. King Ghidorah

Space Kaiju from the Godzilla Galaxy Odyssey Manga Series

An Alien Black Dragon Kaiju that comes from Kenshin Chaos.

Izhazilla (イザジラ Izajira)It is a black Nine-Tailed Fox Kaiju known as the "Princess of the Kaiju". From Kaiju Slayer Member no. 2.She was also blessed as an "Immortal Princess" by her deceased family members.

Dorbrickgaron (ドルブリックガロン )He is the leader of the Kaiju Destroyer members, who previously had evil intentions, but has now become good after the brutal battle against Nezhuro. The members consist of 9 colleagues, namely: Makoma(Girl,A Mako Shark Kaiju), Meicroxx(Girl,A Virus Cat Kaiju), Mugendral (Boy,A Giant Machine Dragon Kaiju), Quitty(Girl,A small pink Kaiju), Luxcrawer(Boy,A bone Kaiju), Cerberbot(Boy,A black Cerberus Dog Kaiju), Monnodotron(Boy,An Armored Shark Kaiju), and also Jellyrenge(Girl,A small Jellyfish Kaiju).Cruel but friendly, likes to stare sharply, cares about his friends, and is also loyal to the other Kaiju members.

Magita (マギタ Magita) is a giant Trilopod monster featured in the final issue of the IDW comic series Godzilla: Rulers of Earth. The largest of the Trilopods, Magita dwelt within the creatures' giant hive in Los Angeles, and was released as the Cryog Emperor Karkaro attempted to seize victory over Earth's monsters from the jaws of defeat. Magita turned its incredible power against the combined efforts of the Earth monsters, including Godzilla, Anguirus, Rodan, King Caesar, and Zilla. When they were unable to overcome the beast, Godzilla called upon every ounce of his power to fire a devastating spiral red heat ray followed by a nuclear pulse that obliterated Magita and ended the Trilopod invasion. Magita, the massive Alpha Queen the Trilopods from Godzilla: Rulers of Earth (IDW comics), possesses immense physical strength, allowing her to swat away earth kaiju with ease. Her abilities include powerful jaws and claws, along with extreme durability,, and the ability to absorb power.

Zibaiazilla or the nickname Queenzhazilla/Queen of Electrolux is Izhazilla's powerful mother and the leader of all Kaiju Kitsune Thiren on her home planet "Voltra Land", Which was declared "Destroyed" several centuries ago due to a Voltranium explosion which was so powerful that it destroyed all the contents of the planet. Now she is declared dead of his dramatic sacrifice, before her home planet was destroyed,She was willing to save her last surviving child and move him to Earth so that she would not be affected by the explosion and also replace him as her final task as a "Kaiju Hero".But the rumors that happened were wrong, actually Zibaiazilla is still alive because someone saved her, she was saved by an unknown Holy Kaiju, but he has a soul the Noble and Very Brave, He is nicknamed the Legendary Holy Knight. But his identity is unknown.

Earth Garon (アースガロン, Āsu Garon)[3][6] is the SKaRD's primary bipedal kaiju-type counter-kaiju robot artillery.Earth Garon (Type 23 Special Tactical Armored Kaiju) is a powerful, bipedal anti-kaiju robot operated by SKaRD in Ultraman Blazar. Personality:Reliable and Stoic Defender, Versatile Combatant, Intelligent AI (EGOISS), Caring Companion, Durable and "Tanky", Similar to Dog & Wolf, Cute and Cool.

Mechagodzilla (メカゴジラ Mekagojira),better known as Kiryu (機龍 Kiryū, lit. "Machine Dragon"), is a cyborg kaiju who first appeared in the 2002 Godzilla film Godzilla Against Mechagodzilla.Kiryu's name comes from the combined kanji characters 機 (ki) and 龍 (ryū), meaning "machine dragon." These characters appear onscreen during the title sequences of both of Kiryu's film appearances. Kiryu's primary legal name is simply "Mechagodzilla," while his official designation in the films is MFS-3, which is short for Multipurpose Fighting System Type-3 (３式多目的戦闘システム San-Shiki Tamokuteki Sentō Shisutemu).Personality:Kind, Caring, Heroic, Strong, Cold, Quiet, Having Soul and Feelings, and Loyal to his Pilot,Akane Yashiro and his mechanic, Yoshito Chujo.

Mechagodzilla (メカゴジラ Mekagojira), known as Super Mechagodzilla (スーパーメカゴジラ Sūpā Mekagojira) when attached with the Garuda, is a United Nations mecha that appeared in the 1993 Godzilla film Godzilla vs. Mechagodzilla II.The year is 1992 A.D. In order to counter the threat posed to the planet's survival by Godzilla, Japan's Counter G Bureau recruited the world's most brilliant scientific brains to build a fighting machine. The first machine was called "Garuda". But its fighting capabilities were limited. A far more powerful machine was required. They salvaged a robot from the future, Mecha-King Ghidorah, in order to study its advanced technology. They applied technology of numerous anti-personnel weapons and created the mightiest machine to attack Godzilla, called Mechagodzilla.He hates Rodan because Rodan helped Godzilla when he almost succeeded in defeating Godzilla. Personality: Quiet, firm, obedient to the orders of the G-Bureau Leader (Human), and loyal to humans

The "Ghidorah" (ギドラ Gidora) part of King Ghidorah's name comes from the Japanese word for "hydra" (ヒドラ Hidora), which shares two of its three katakana characters with "Ghidorah." It also, coincidentally or not, sounds very similar to the Russian pronunciation of "hydra" (Гидра, ˈɡʲidrə) Personality: pure, sadistic malevolence, and destroyer. They hate Godzilla, Anguirus, Rodan, King Caesar,and other good kaiju.But he is friends with Spacegodzila, Destroyah, Biollante, Gigan and Megalon.

Mechagodzilla (メカゴジラ Mekagojira) is an alien mecha that first appeared in the 1974 Godzilla film Godzilla vs. Mechagodzilla. Personality: slightly malicious. Hate Godzilla,King Caesar, Anguirus and Rodan.

Rodan (ラドン Radon) is a giant Pteranodon kaiju that appeared in the 1993 Godzilla film Godzilla vs. Mechagodzilla II. Personality: fiery, aggressive, yet fiercely loyal, protective kaiju,greedy and gluttonous.

Mothra (モスラ Mosura) is a giant divine moth kaiju who first appeared in the 1961 serialized novel The Luminous Fairies and Mothra, which was adapted the same year by Toho into the film Mothra. Mothra made her first appearance alongside Godzilla in the 1964 Godzilla film Mothra vs. Godzilla. Personality: Loving, Kind, Caring, Loyal, Likes Battra, Kiryu, Godzilla, and Rodan.

Anguirus's Japanese name, Angirasu (アンギラス), comes from the Japanese spelling of the name of the dinosaur genus Ankylosaurus (アンキロサウルス Ankirosaurusu), The best friend to Godzilla and Rodan. Personality: Good but he is a bit Stupid, Stubborn, Clumsy, Cares about his friends and loyal to Godzilla and Rodan.

Godzilla (Japanese: ゴジラ, Hepburn: Gojira), or sometimes known as Heisei Godzilla (Japanese: 平成ゴジラ, Hepburn: Heisei Gojira) is a giant monster, or kaiju, and the main protagonist of the Heisei era of the Godzilla. He hates Kaiju like Biollante, Battra, Destroyah, Super Mechagodzilla, Spacegodzila,King Ghidorah and others besides Kaiju who are kind to him like (Anguirus, Rodan, Mothra, Kiryu, King Caesar and others). Personality: Kind but Aggressive, cares about his son, Little Godzilla. Strong, Quiet but alert