The "Inner Sailor Guardians" were a group of the Sailor Guardians of the Inner Solar System.
- Sailor Venus (Leader)
- Sailor Mercury
- Sailor Mars
- Sailor Jupiter
During the age of the Silver Millennium, the Inner Sailor Guardians were the Guardians of Princess Serenity. They were also the princesses of their respective planets but lived on the Moon at times. When Queen Metalia and the Dark Kingdom invaded the Moon Kingdom, the four were killed while trying to protect their princess. After Queen Serenity sealed away Metalia, she used the power of the Silver Crystal to send the Inner Sailor Guardians, Princess Serenity, and Prince Endymion to the future to be reborn on Earth to live happy lives.
In 20th Century Tokyo (21st Century in the Sailor Moon Crystal), the Inner Sailor Guardians were reborn as normal human girls. However, when the threat of the Dark Kingdom arose, they were forced to awaken their powers. Princess Serenity's reincarnation, Usagi Tsukino (Sailor Moon) discovered the reincarnations of her four Guardians, who would soon become her dearest friends: Ami Mizuno (Sailor Mercury), Rei Hino (Sailor Mars), Makoto Kino (Sailor Jupiter), and Minako Aino (Sailor Venus).
In the manga and Sailor Moon Crystal, Sailor Venus was the leader of the Inner Sailor Guardians and would impersonate her princess (since she resembled her the most), Serenity/Sailor Moon to keep her from harm.
When there isn't a threat going on, the Inner Sailor Guardians are more connected to their human lives; dreaming about their futures (despite already knowing them), and being regular teenage girls. However, when they're needed as Sailor Guardians they are ready to protect their world and their princess from harm.
- Minako was the first of Inner Sailor Guardians to be awakened, as Sailor V instead of her true form as Sailor Venus. Though after she defeats the Dark Agency, she becomes Venus and starts her quest to find her comrades.