(Official Handbook of the Marvel Universe: X-Men - Age of Apocalypse 2005 I#1) - The X-Ternal Candra was the Benefactor of the Thieves Guild of New Orleans. One of the guild's most talented recruits was young Remy LeBeau whose potential caught Candra's eye.
(Official Handbook of the Marvel Universe: X-Men - Age of Apocalypse 2005 I#1) - When Apocalypse declared war on humanity, Candra and her fellow X-Ternal Gideon were among his earliest recruits.
(X-Men Chronicles I#1 (fb) - BTS) - Candra and Gideon proved themselves loyal to Apocalypse and soon joined his horsemen War and Death plus the feral mutant Sabretooth to become En Sabah Nur's advance guard as he began to foment mutant hysteria across the United States. He often sent them into battle as his shock troops, causing growing fear among the human population.
(X-Men Chronicles I#1 - BTS) - Apocalypse took Candra and the others aboard his massive Celestial spawned spacecraft. He flew the vessel to New York City where Candra served as his herald. Appearing as a giant hologram over the city, she announced to the terrified human population that the time of humanity had come to an end. They then flew to Cape Citadel in Florida where the United States' stockpile of nuclear weapons were stored. He ordered Sabretooth to lead Candra and the Horsemen on a mission to secure the weapons. The attack on the base was monitored by Magneto who concluded the time had come to take his X-Men and actively oppose Apocalypse.
(X-Men Chronicles I#1) - The Horsemen had little trouble entering the base, though Candra had a hard time obeying Sabretooth's orders and preferred to handle things her way. When Sabretooth contacted Apocalypse to announce the success of the mission, he was shocked when his master issued new orders: they were to launch the missiles. Sabretooth did not want to cause so much death and destruction, leading Apocalypse to instantly turn on him. Candra was put in charge and got ready to crush Creed by capturing him a telekinetic bubble.
(X-Men Chronicles I#1) - While Gideon worked on accessing the launch codes, Candra and the others went outside to execute Sabretooth. Before they could carry out their plan, they encountered Magneto and his X-Men. Creed talked Candra into freeing him so he could help them defeat their opponents. She complied, allowing Sabretooth to attack Magneto head on, which created an opportunity for her too hit the X-Men's leader with a telekinetic barrage. However, Candra was overwhelmed by the ferocious approach of the X-Men's newest recruit Weapon X. She agreed to let Sabretooth handle things and didn't react when Creed shamed her for this failure. Instead, Candra focused her attention on Magneto and Jean Grey who offered to keep her busy while Magneto went inside to stop Gideon.
(X-Men Chronicles I#1 - BTS) -
Magneto defeated Gideon before the missiles were launched, forcing
Apocalypse to summon Candra, War, Death and Gideon back to his ship.
Before leaving, he tried to kill the X-Men by firing his vessel's main
cannon. Magneto managed to deflect the blast in time.(X-Men Chronicles I#1 - BTS) - Apocalypse returned to Manhattan with his heralds and had little trouble conquering the island. He had his forces begin work on his new, massive citadel headquarters.
(Gambit and the X-Ternals I#1 (fb) - BTS) - Candra remained loyal to Apocalypse for most of his rise to power, even becoming one of his Horsemen. She participated in En Sabah Nur's Wars of Succession, a series of conflicts within his own ranks to determine who was truly worthy to serve him. She was eventually killed by Holocaust who took her place as Horseman (see comments).
(Official Handbook of the Marvel Universe: X-Men - Age of Apocalypse 2005 I#1) - Candra's death resulted in the destruction of New Orleans and the disbanding of the Thieves Guild, young Remy LeBeau eventually joined up with the X-Men.