Princess Neptune is rendered here in the signature Q Posket style: a compact, chibi-leaning figure with a serene expression, oversized sapphire eyes, and long, flowing cobalt hair that cascades down her back. She wears a regal blue gown with gold accents, a delicate crown, and a translucent cape that moves as if underwater. Her pose is poised and graceful, with slender hands and a hint of oceanic momentum in the base. The paintwork emphasizes soft gradients, pearl-like highlights, and fine sculpted details on the bodice and sleeves, capturing both royalty and sea-dream elegance.

Princess Neptune, as depicted in the Sailor Moon Eternal storyline, is the royal heiress of the underwater kingdom of Neptune. As a princess she embodies dignity, duty, and a deep connection to the oceans, guiding her people and watching over the Solar System from her quiet, strategic vantage. In the movie, she joins the Sailor Guardians to confront the threat of Chaos and the looming crisis that threatens both Earth and Neptune. Her powers draw on sea, time, and judgment, and she plays a crucial role in uniting factions, balancing diplomacy with combat. Her relationship with Sailor Uranus reflects trust and shared resolve, and together they protect the future from disruption.