TV Special
Description
The character known as the Little Girl in Gundam Build Fighters Try Island Wars is a mysterious young girl who appears on the remote island where the Try Fighters are invited to test a new battle system. She is the daughter of Aila Jyrkiäinen and Reiji, two central figures from the original Gundam Build Fighters series. In official credits and promotional materials, she is listed as Young Girl or Mysterious Girl, as her name is never explicitly revealed in the special. Her background ties her to the Arian civilization, which is the source of the Plavsky particles used in Gunpla battles, and this heritage grants her an innate connection to the particles and to the Arista, a crystalline substance that can store and release vast amounts of Plavsky energy.

Personality-wise, the Little Girl is quiet and observant, initially appearing lost or searching for something on the island. She carries an air of innocence but also a sense of purpose, as she is drawn to the Plavsky particle phenomenon that surrounds the island. Her primary motivation is to protect or stabilize the unstable Arista that has grown on the island, which poses a threat to everyone present. She does not engage in direct combat but instead acts as a catalyst for the story’s resolution by guiding the protagonists toward understanding the danger.

In the narrative, the Little Girl serves as a key supporting character. She first encounters Mirai Kamiki, the younger sister of Sekai Kamiki, and the two form a gentle bond. Through her interactions with Mirai and the other members of the Try Fighters, the truth about the island’s experimental Plavsky Particle Mk. II and the manifestation of a giant Arista is revealed. Her presence helps the group realize that the Arista has begun to react autonomously, and she ultimately plays a central role in calming it, using her inherited abilities to communicate with the crystal and reduce its energy to a safe level.

The Little Girl does not undergo a dramatic personal development arc within the short runtime, but her role shifts from a mysterious wanderer to a resolved figure who reconnects with her family by the special’s end. Her notable ability is a form of empathic or particle-based resonance with the Arista, allowing her to influence Plavsky energy without the use of a Gunpla. This power is a direct result of her Arian lineage, linking her to the original series’ lore. Her key relationships are with her parents, Aila and Reiji, who are mentioned but do not appear directly in the special, and with Mirai, who becomes a friend. Through her, the story emphasizes themes of legacy, the bond between parent and child, and the mysteries of the Plavsky particle system.