Mina Aino, known as Sailor Vênus, is a central character in Sailor Moon SuperS. She is the reincarnation of the Princess of Venus and the leader of the four inner guardians who protect Sailor Moon. Her background sets her apart as the first sailor guardian to awaken, having been discovered by the white cat Artemis a full year before the other guardians and given the alias Sailor V. During that year she operated alone, fighting crime as a vigilante in London, where she experienced a painful romantic disappointment that deepened her sense of duty and sacrifice. She initially presented herself as a decoy princess to draw danger away from the true princess, Usagi Tsukino.

Her personality is a blend of enthusiastic optimism and hidden maturity. She is cheerful, outgoing, and often hyperactive, with a strong romantic streak and a love for pop culture, particularly aspiring to become a famous idol. She is also athletic and excels at volleyball, and her energy can sometimes come across as scatterbrained or boy-crazy. However, beneath her comedic exterior she possesses sharp intelligence, resilience, and a deep sense of responsibility. Her motivations are driven by loyalty to her friends, especially Usagi, and a sincere desire to protect love and beauty in the world. She takes her title as guardian of love seriously, frequently dispensing romantic advice even when her own love life is chaotic.

In the story of SuperS, her role continues as a dedicated warrior and close companion to Usagi, often acting as the most experienced member of the team. She frequently partners with Sailor Jupiter for comedic effect and with Sailor Moon for mission-focused teamwork. Her relationship with Artemis is that of a trusted mentor and friend, as he lives with her and guides her. She also shares a close bond with the other inner guardians, acting as a steadying presence despite her own antics.

Her development over the series shows a shift from a serious, mission-focused solo operative to a more relaxed and openly goofy friend. In SuperS, her comedic side is emphasized—she may date two villains simultaneously without realizing it—but she never loses her core competence or willingness to sacrifice for the team. Her notable abilities revolve around light, love energy, and control over golden metal. In her Super Sailor Vênus form, which appears in SuperS, she wields the Venus Love and Beauty Shock, a powerful energy attack in the shape of a heart that she delivers with her Whip of Love. She also retains classic attacks such as the Crescent Beam, a concentrated beam of light, and the Venus Love-Me Chain, a golden chain that can bind, whip, or grab foes. She is notably supernaturally strong, capable of wielding heavy weapons one-handed and performing incredible feats of agility and strength that often surprise her teammates.