Opaka Sulan was a Bajoran female and the Kai of Bajor towards the end of and for a short period after the Cardassian occupation. She had a son named Opaka Fasil who was killed during the Occupation.
During the Occupation Opaka revealed the location of a resistance cell in Bajor's Kendra Valley, which her own son was a member of, resulting in the deaths of her own son and the 42 other members of the resistance cell. This was in order to keep the Cardassians from killing over 1,000 other Bajorans. Years later, Vedek Bareil Antos felt compelled to protect her memory by trying to take the blame for the deaths of the resistance cell himself.
At the end of the Cardassian occupation of Bajor, Opaka was living in seclusion, and rarely saw anyone.
In 2369 Opaka died in a runabout crash on a moon in the Gamma Quadrant, the moon was in fact a prison holding two warring tribes - The Ennis and the Nol-Ennis - who were left to fight forever thanks to microbes in the moons atmosphere with the ability to bring the dead back to life. These microbes allowed Opaka to come back from the dead but also resulting in her having to stay on the moon as leaving would kill her again. Opaka took this as a sign from the Prophets and stayed on the moon to reconcile the warring factions.
A month after the unification of the tribes, a ship piloted by an Ascendant named Raiq crashed. As a reward for healing her, Raiq destroyed the satellite network over the planetoid which had previously prevented anyone leaving the moon and controlled the microbes. With the microbes deactivated, Sulan could leave the lunar prison. A month later, a survey ship assisted in the repair of ships on the moon and Opaka left with about thirty of her followers from the tribe.