Isis is the younger sister to Horus II. She and her family were always into crafting objects and using magic. Her brother however wasn't so serious about his role in life. Unlike his parents, Isis supported her Brother in every single way possible, she loved his tricks. After Horus ran away Isis never saw her brother much anymore, but she then saw him again. He was happy and married to the Queen of Mau; Lady Rehema. Soon after a while, Isis cried and broke down just as much as Rehema did, losing her older brother; Rehema her first husband. Hathor was only still a small little infant at this time. Saddened by this they remembered about the Ankh Oasis which held a mysterious cauldron that could revive a star or end it, both Isis and Rehema left to revive her brother. But when getting there, Isis had a change of heart. My brother would much rather have another defender of this planet to help the others out in a time of crisis, thus Nephthy's was born.

Osiris much like Sailor Pluto but guards the gates to the cauldron, has guarded it his whole life. Least until Galaxia attacked him, but this was much after the birth of Nephthys which was being taken care by Isis during this time. Osiris comes back to life much like the others who lost their lives during that time. One fateful encountering while guarding the gate. He met two really depressed senshi females. "You there! You shall not pass!" He called out. They begged and pleaded as he felt their gentle heart through his keen abilities. "You risk ending your lives, do you wish to keep going further?" After they told him the story, he let them pass. He was not normal for letting someone go so easily. He waited and they did come back, but with a baby with blond hair. "This is not a man?" Osiris could sense and smell female all over the infant. "I chose a bigger purpose and I'd love it if you would help me train her since I have no powers of my own as a guardian. Osiris sighed and nodded then agreed. As she grew older he enjoyed her company and him and Isis started to fall in love with each other. They made constant visits and Isis would always bring gifts and food. Later they talk about marrying.

Nephthys is the new star of Horus II that was reborn at the Ankh Oasis. At this time, Isis and Osiris began to become more friendly with one another and she asked if Nephthys could get some senshi training from Osiris, even though he was completely blind he was more than enough of a master to take on the job and he accepts. Hathor doesn't really remember much of Nephthys since they lived separate and hardly ever see each other since her sister chooses to stay near Osiris instead of her Aunt Isis's place. But that doesn't seem to bother Isis since she started to like to visit them there more often. Mau and the others don't meet Nephthys until later, not realizing that Simon and Hathor have already met her. Nephthys's weapon is the Sekhem Scepter. Nephthys is a skilled fighter, but she loves to also make jewelry and use magic.