The Geminae Superia are the twin guardians of Saint Celestine.
Previously known as Eleanor and Genevieve, they were both Canoness' of the Order of Our Martyred Lady. They were both killed by the Daemon Prince Urkanthos during the battle for Cadia in the 13th Black Crusade. Due to their bravery and faith, both were resurrected as Living Saints by Saint Celestine upon her arrival to Cadia and they serve as her champions.
After the opening of the Great Rift, during the battle on Tsadrekha, the Living Saint recruits two new warriors among the present Sisters of Battle, who become her new Geminae Superia but are killed shortly afterwards by the overwhelming Chaos forces.
On the world of Kophyr, Celestine appoints two warriors of the Adepta Sororitas as her Geminae Superia. It's a great honour, even though the soldiers know that the common fate of those who inherit this role is to die in battle.
Shards of Celestine
During Celestine's resurrection trials she must pass every time she dies, she encounters two shards of her soul: "Faith" and "Duty" who remain separate, but support her like the Geminae. Upon completion of her trials, they return to life with her, instead of merging with her. This heavily implies that when she chooses two Battle Sisters as her new Geminae Superia, they are imbued with these soul shards to empower them and turns them into duplicates of her previous Geminae Superia.
- 1: Gathering Storm: Fall of Cadia — Chapter 4
- 2: Shroud of Night (Novel)[Needs Citation]
- 3: Celestine: The Living Saint (Novel)[Needs Citation]