Apple, a 17-year-old female member of the specialized Maris task force known as the White Nuts (or White Knights), possesses distinctive violet hair and petrol-colored eyes. Standing 1.65 meters tall and weighing 50 kilograms with blood type A, her primary role within the team is navigation.

She is one of three teen soldiers selected to wield the Zillion Weapon System in humanity's fight against the extermination-seeking Noza (Nohzas) civilization on Maris. The Zillion guns fire red photon bullets powered by the unstable substance Zillium, demanding careful ammunition management.

After the Noza wars conclude, Apple transitions into a music career, forming the rock band "The White Nuts" with fellow members J.J., Champ, and Dave. During a live performance, she is kidnapped by the ruthless killers of the ODAMA Clan. This abduction forces her former teammates to mount a rescue mission to the clan's fortified mountain retreat.

The rescue operation faces challenges due to critically limited Zillium supplies for their Zillion guns. Amidst this event, a mysterious stranger named Rick is revealed as her former lover.

Her team interactions include connections with J.J. and Amy Harrison, who serves as an assistant to the White Nuts' commander, Mr. Gord.