Dragonaut - The Resonance
Twenty years prior to the story`s beginning, an asteroid headed for Earth destroys Pluto. Due to Pluto`s destruction, the asteroid, which is dubbed Thanatos, becomes temporarily stagnant in Pluto`s orbit. Now, in order to avoid Earth`s impending destruction, the International Solarsystem Development Agency (ISDA) works on the `D-Project`, and secretly creates weapons called `Dragons` after finding a dragon egg under the ocean. However, they soon find out that the asteroid is not their only threat, as powerful, destructive dragons from Thanatos appear on Earth.
By Satoshi Kinoshita (Dragonaut - The Resonance)
Voiced by: Daisuke Ono
Jin Kamishina is an 18-year-old boy who lost his family in a shuttle accident two years ago. He is the only known survivor, who mysteriously had no major injuries despite falling from a high altitude. Since then, he has lived a solitary existence, and Toa becomes the first person in two years that he connects with. It is later revealed that he was saved by Toa and that he underwent a successful Resonance during the accident. Despite Toa revealing that she was responsible for the accident, Jin continues to protect her.
In the manga, Jin's character is drastically different compared to his anime counterpart. When dragons invaded Earth, his family was killed in the destruction of Tokyo two years prior to the story's beginning. Due to this, he seemingly becomes cold-hearted and vengeful, showing no mercy when destroying invading dragons. He is considered to be one of the most dangerous of the Dragonauts when he actualizes with his partner Toa, whom he often insults (albeit, in a seemingly comedic nature). He is also shown to have some athletic abilities of his own. Despite his stoic attitude, he strives to protect mankind with the power he has gained.
Voiced by: Minori Chihara
Toa is a mysterious girl who saves Jin from a dragon in the first episode. She is shown to have remarkable athletic abilities, extraordinary strength, and accelerated healing capabilities, even showing to be able to heal others as well; all of which are attributed to the fact that she is a dragon. In her dragon form, she is immensely powerful; she is able to take on more than two other dragons at a time. She is referred to as the "Album" by the ISDA, who wishes to capture her in order to retrieve information on the original dragons from Thanatos.
She calls Thanatos 'mother', and her mission on Earth is revealed to be the retrieval of the Earth-made dragons possessed by the ISDA.
She later admits to being the one that collided with the shuttle that killed Jin's family. She got the name "Toa" after retrieving half of a bracelet that belonged to Jin's sister, Ai. Before the accident, the bracelet had "To Ai" engraved on it, but now it only reads "To A".
She also bears a relatively bright "stigmata", which signifies her impending death; the brighter it glows, the closer she is to death. However, her stigmata disappears in the final episode.
Toa is a barrier type dragon. In her Communicator form, she can create a shield strong enough to repel a fully actualized dragon. In her dragon form, she mainly disables her opponents by locking them in barrier spheres.
In the manga, she is part of the Dragonauts and is partnered with Jin, with whom she had Resonated with two years ago right after hatching from her egg. Though she possesses all the abilities as her anime counterpart, she is shown to be very klutzy, which often infuriates Jin. Despite Jin's seemingly cold attitude towards her, she remains very loyal to him.
Voiced by: Junichi Suwabe
Gio is a dragon from the ISDA who is assigned to be Kazuki Tachibana's "partner" after Kazuki successfully resonated with Gio's dragon egg form. However, despite being Kazuki's partner, Gio does not take orders from him, showing more concern for Toa, whom he states he was born to protect. Due to this, he is considered to be a failed experiment. His attachment to Toa seems to stem from the fact that he awakened early to Toa's cry when she first actualized in the series.
During a battle on Mars, his energy drastically increased while in his dragon form, and he created an explosion that caused the planet to burn; a phenomenon that can still be seen from Earth even a year later. Later, when he returns from his brief visit to Thanatos, his personality seems to have shifted, as he attacks his former comrades, and claims to be Thanatos's successor. However, he had only done this in order to ensure that Toa does not die. He would once again help his friends stop Thanatos, and in the end, he leaves Earth.
Despite initially finding Jin to be a nuisance, he later forms a bond with him due to their shared feelings for Toa. After realizing how Jin and Toa feel for each other, he takes a supportive role, and tries to protect the two from danger. However, he still has lingering feelings for Toa, resulting in him feeling isolated from the two.
Gio is a sword type dragon. He is able to create a black sword while in his Communicator form. His finishing attack as a dragon is a passing slash with a sharp horn that he extends.
His name is derived from his code-number, "G10", which Kazuki misread as "Gio".
In the manga, he makes his first appearance as Kazuki's dragon partner.
International Solarsystem Development Agency (ISDA)
Kiril Zhazhiev (Kiriru Jajiefu)
Voiced by: Yuichi Nagashima
Kiril is the leader of the D-Project, and is the man in charge of finding ways to destroy Thanatos.
Baisil Sakaki (Beizeru Sakaki)
Voiced by: George Nakata
Sakaki is a soldier working for the ISDA as the Dragonauts' military commander. He had been the one that suggested the use of dragons in destroying Thanatos, and believes that the D-Project should go public. He remains to work for the ISDA even after it falls under Gillard command, believing all dragons are a threat to Earth's safety. Despite this, he uses a dragon, who looks like his deceased daughter, to capture other dragons. Though he considers her to be a tool, he sometimes shows concern for her, even admitting his love for her when she chooses to stay by his side.
He witnessed the death of his wife (Martina) and daughter (Laura), who were on the same shuttle flight as Jin's family.
Voiced by: Miyuki Sawashiro
Laura is Sakaki's dragon counterpart, often calling him her father. She initially remains hidden in Sakaki's apartment, but works with him to capture other dragons a year later. Though he treats her like a tool, she remains completely loyal to him. She wears a mechanical suit for battle, and possesses the stigmata,
She is revealed to be "Raum", the final original dragon from Thanatos. She apparently lost connection with her original dragon form after completing a Resonance with Sakaki, which is why she only battles in a mechanical suit. Her original form was the dragon encased in the giant tube at the ISDA, but that is destroyed by Nozaki.