*Sailor Galaxia is the ruler of Shadow Galactica and the Sailor Guardian of Destruction in Crystal.

Civilian In her casual form, Galaxia is a young, tall, and slender woman with red eyes. she has long, wavy, hair. Her hair has a color scheme that varies from gold at the top to red at the bottom, making a gradient between gold and orange to red from the shoulder. She wears a long white dress with straps, open at the edges, the central part of the dress has diamond patterns. She wears white high-heeled shoes and red earrings.

Sailor Galaxia In her Sailor Guardian form, her uniform has the same base as the other guardians, except for the gloves, however her uniform stands out from the others because it is made of pure gold (representing her enormous power compared to the others), conveying a tyrannical posture, or great sovereign. Her outfit appears heavy and sturdy, similar to a warrior's armor, and she wears gold boots to match her sailor fuku. On her arms she wears only her Galactica Bracelets. Each bracelet has a different colored gem: purple on the left and green on the right. On her chest she carries the Sapphire Crystal, which she wears as a brooch. On her waist she wears a gold belt with leaf patterns, on her neck she wears a choker with a similar pattern, and unlike her 90s version, the shoulder pads are dropped, but keep the same pattern and shape, resembling epaulettes. On her head she has a golden headdress and a scrunchy, in which her hair is curled, giving it a crown-like appearance. She wears lilac eye shadow.

Growing up in an environment full of war, death and destruction, Galaxia became a lonely, strong and power-hungry woman. Her desire for power has transformed her into a cold, cruel, ambitious and extremely arrogant being, who believes that everyone is inferior to her, and that no one is above her, the only exceptions being Chaos, and Sailor Moon, who she believes is a worthy adversary. During her quest to become the most powerful Guardian, Galaxia also became a genocidal terrorist, destroying thousands of planets, sparing few and forcing or inspiring those to follow her with promises of power.

She also doesn't care in the slightest and is quite cruel to her allies and minions, showing complete indifference to their existence; sending them on missions they are unlikely to be successful and should any of them return after failing, she would classify them as "trash" and kill them without mercy. She is also quite sadistic, enjoying seeing her opponents suffer and torturing them psychologically by killing or injuring her enemies' allies. Galaxia is also intelligent and manipulative, as she used Sailor Moon to try to destroy Chaos, but her intelligence wasn't enough to fool the entity.

After being betrayed by Chaos and saved by Sailor Moon, Galaxia loses her willpower and is unable to fight, becoming an aimless star.*