The Original Outer Guardians were Sailor Pluto, Neptune, and Uranus. Instead of protecting the Moon Kingdom and its rulers like the Inner Guardians, the Outers would monitor their respective planets.

In the original manga and Sailor Moon Crystal ... Neptune's mirror tailsman and Sailor Uranus' sword talisman. Eons ago, Sailor Pluto was taught by Queen Serenity herself how to look after ...