Athena Henderson, daughter of Kei Katsuragi and Tina, possesses a serious and conscientious nature. She holds duty paramount, demonstrating strong loyalty to the Chiram military command. This loyalty sparks internal conflict when she uncovers her leaders' selfish motives, complicating any action against her orders.

Trained as a pilot by Olson Verne after his arrival through a dimensional gate, Athena's initial admiration for him deepens into romantic love. She struggles to express these feelings openly. This profound emotional connection ultimately prevents her from acting against Olson despite her military obligations.

When the Chiram military brands Olson a traitor, Athena chooses to aid him. Her exceptional piloting skills become vital, saving both Kei and Olson on multiple occasions. She continually chafes at her father, Kei, due to their contrasting personalities. She views his disappearance as abandonment, a resentment unresolved until the series' end despite Kei's inability to control being catapulted into the future.

By episode 33, Athena is assigned to the Glomar with the mission to protect the two tokuitens, Kei and Olson. She proves decisive in the final battle, her critical actions during the operation to transport both men to the orbital elevator's summit helping facilitate the eventual unification of the Chiram and Emaan forces.

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