Machina (マキナ Makina?) is Akira's Dragon partner, who acts like a big sister towards Akira, correcting her speech and keeping her in check. She states that she follows Akira because she wants to, not because Akira is her master. When Akira dies, Machina goes berserk in response, but later encases herself and Akira in ice, though merges with Thanatos as part of its soul a year later. When Thanatos leaves Earth to be in peace, Akira and Machina's spirits are seen as the two of them smile at each other as they knew that humans and dragons can live in peace, and with that their spirits flew away.Machina is a water type dragon. She has the ability to manipulate water when in her Communicator form. In her dragon form, she can attack with liquid whips and also with concentrated balls of water, along with unleashing countless ice crystals from her wings. These attacks seem particularly effective against fire-type elements.

Dragonaut: The Resonance
In order to avoid Earth's impending destruction from an asteroid, the International Solarsystem Development Agency (ISDA) works on the "D-Project", and creates dragons after finding a dragon egg under the ocean. However, they soon find out that the asteroid is not their only threat, as powerful dragon-like creatures appear on Earth. After witnessing a murder by one of the creatures, Jin Kamishina gets involved in the mysteries of the dragons and becomes a dragon pilot, otherwise known as a "Dragonaut". Helping him on his journey is Toa, a mysterious girl who saves him from falling to his death after the creature attacks him.