Kogane Shiraishi functions as a secretary for the Grand Paladin organization, coordinating the group's abilities and devising combat strategies. She displays mint green hair and eyes while maintaining a professional demeanor. Her role provides extensive knowledge of Nebula Weapons beyond what she reveals to others.

Her background connects significantly to extraterrestrial forces, identifying her as a Rielian—a species shared with Ginko Kuroi. This alien heritage explains her deeper comprehension of the interstellar conflict and its technologies.

As events unfold, Kogane shifts allegiance to the Sealing Faction of the Nebulans under Generalissimo. Within this faction, she performs critical duties: translating Generalissimo's barks into intelligible speech as his voice, and piloting his mechanized combat unit after being swallowed by him.

Her transition from a seemingly human secretary to an active participant in the cosmic conflict underscores her integration into the struggle between the Pacifist Faction, the Sealing Faction, and humanity's defenders. Her actions directly influence strategic developments in the interstellar warfare.