Tia Dalma

Calypso was a sea goddess and the lover of Davy Jones. Calypso was as harsh and untamable as the sea itself, but nevertheless fell deeply in love with Davy Jones. She asked him to carry out the duty of ferrying souls drowned at sea to the afterlife, giving him use of the Flying Dutchman to visit the dimension between worlds that came to be known as Davy Jones' Locker. As a reward for carrying out a decade of service, Jones would be reunited with Calypso for a single day, and if she was faithful, he could come and go on land or sea forevermore afterward.

Jones remained true to his word, and spent the next ten years faithfully carrying out his duty. Calypso was not waiting for him when he returned to the land of the living, however, as her very nature would not allow her to wait. Enraged, Jones carved out his own heart and locked it in the Dead Man's Chest, and left the dead to wander aimlessly in the Locker. For abandoning his duty, Jones was transformed by Calypso into an amalgamation of human and tentacled sea creature to reflect the man inside, and his crew suffered similar disfigurements.

Seeking revenge, Jones made a deal with the first Brethren Court to imprison Calypso in human form. Led by the original Pirate King, the Pirate Lords' nine pieces of eight were used to bind Calypso into the body of Tia Dalma, and only with all nine pieces could she ever be released. With Calypso's fiery and unpredictable nature bound, the Brethren Court deemed the seas safe to travel as they so pleased.