Background Story
A mysterious castaway that wound up at Radiant Garden, Xehanort was near death and possessed no memory of his life before.
The king of Radiant Garden, Ansem the Wise, rescued and cared for him. Even though Xehanort had no memories, he had an innate desire for knowledge and learned at a surprising rate.
Meanwhile, Ansem the Wise started to begin worrying over the danger of darkness in people's hearts and decided he would start experiments on the human heart in order to prevent disaster.
Xehanort, loyal to Ansem the Wise, agreed to be a test subject for Ansem the Wise's experiments, in the hopes that he would recover his memory.
Ansem the Wise's five other students were involved in carrying out the experiments: Even, Ienzo, Braig, Dilan and Elaeus.
During this experiment, Ansem the Wise noticed that Xehanort had "extraordinary", maybe even abnormal, abilities.
The other students also experimented on Xehanort, hoping to help him get his memories back. Eventually, Ansem the Wise realized that he should not meddle with human hearts and stopped the experiments, but Xehanort continued in secret along with the other assistants.
Taking on the name of "Ansem", Xehanort with the others began inhumane experiments testing on countless human hearts.
This resulted in Xehanort's discovery of the creatures which he named the "Heartless", and began to study.
He wrote down his findings and ideas in the Ansem Reports, entries 2 to 13 (1 to 12 in the Japanese version), to continue the first Ansem Report that Ansem the Wise wrote himself.
Through his study of Heartless, Xehanort found his way into the deepest part of Radiant Garden and found a mysterious door.
He opened it and behind it he discovered a huge mass of energy and hypothesized that it was the "heart" of Radiant Garden; the heart of the world.
Ansem the Wise later questions in his own written reports why Xehanort had the ability to open this mysterious door, but does not discuss the matter further.
That night there was a meteor shower and Xehanort believed that opening the door broke down the walls between the worlds.
Continuing his experiment, he came to create a machine that was able to spawn Heartless.
In order to differentiate from the "Pureblood" Heartless, he branded an emblem on the artificially created ones and named those "Emblems".
His curiosity magnified when the otherworlder King Mickey arrived to Radiant Garden. Xehanort believed that when he opened the door, he also allowed the possibility of interworld travel.
From King Mickey, he learned about the "Keyblade".
The Keyblade locks the hearts of worlds, and since this was not in best interest to Xehanort he decided to go on a journey in order to stop this Keyblade master.
Along this time, Ansem the Wise discovered that his disciples betrayed him and somehow was banished to the realm of nothingness by them.
Newfound knowledge of the Keyblade led Xehanort to send Kairi, a Princess of Heart, away in order to test his hypothesis that the Keyblade master and the Princesses of Heart are connected and in hopes that he would find this Keyblade master.
Finally, Xehanort cast away his body and stepped deeper into the darkness in order to find the truth about the heart, darkness and, eventually, Kingdom Hearts.
Xehanort's abandoned body became the Nobody Xemnas, leader of Organization XIII whose other senior members included the Nobodies of the other assistants after they lost their hearts.
Xehanort's heart then became a Heartless. Unlike other Heartless, his Heartless retained a human form and also his memories.
Xehanort's Heartless sought out Kingdom Hearts while Xemnas desired to expand Kingdom Hearts' power.
While Xehnanort's Heartless wanted to release the darkness within Kingdom Hearts to obtain the knowledge he had sought, Xemnas desired ultimate power and to become a complete enity once more.
A mysterious castaway that wound up at Radiant Garden, Xehanort was near death and possessed no memory of his life before.The king of Radiant Garden, Ansem the Wise, rescued and cared for him. Even though Xehanort had no memories, he had an innate desire for knowledge and learned at a surprising rate.
Meanwhile, Ansem the Wise started to begin worrying over the danger of darkness in people's hearts and decided he would start experiments on the human heart in order to prevent disaster.
Xehanort, loyal to Ansem the Wise, agreed to be a test subject for Ansem the Wise's experiments, in the hopes that he would recover his memory.
Ansem the Wise's five other students were involved in carrying out the experiments: Even, Ienzo, Braig, Dilan and Elaeus.
During this experiment, Ansem the Wise noticed that Xehanort had "extraordinary", maybe even abnormal, abilities.
The other students also experimented on Xehanort, hoping to help him get his memories back. Eventually, Ansem the Wise realized that he should not meddle with human hearts and stopped the experiments, but Xehanort continued in secret along with the other assistants.
Taking on the name of "Ansem", Xehanort with the others began inhumane experiments testing on countless human hearts.
This resulted in Xehanort's discovery of the creatures which he named the "Heartless", and began to study.
He wrote down his findings and ideas in the Ansem Reports, entries 2 to 13 (1 to 12 in the Japanese version), to continue the first Ansem Report that Ansem the Wise wrote himself.
Through his study of Heartless, Xehanort found his way into the deepest part of Radiant Garden and found a mysterious door.
He opened it and behind it he discovered a huge mass of energy and hypothesized that it was the "heart" of Radiant Garden; the heart of the world.
Ansem the Wise later questions in his own written reports why Xehanort had the ability to open this mysterious door, but does not discuss the matter further.
That night there was a meteor shower and Xehanort believed that opening the door broke down the walls between the worlds.
Continuing his experiment, he came to create a machine that was able to spawn Heartless.
In order to differentiate from the "Pureblood" Heartless, he branded an emblem on the artificially created ones and named those "Emblems".
His curiosity magnified when the otherworlder King Mickey arrived to Radiant Garden. Xehanort believed that when he opened the door, he also allowed the possibility of interworld travel.
From King Mickey, he learned about the "Keyblade".
The Keyblade locks the hearts of worlds, and since this was not in best interest to Xehanort he decided to go on a journey in order to stop this Keyblade master.
Along this time, Ansem the Wise discovered that his disciples betrayed him and somehow was banished to the realm of nothingness by them.
Newfound knowledge of the Keyblade led Xehanort to send Kairi, a Princess of Heart, away in order to test his hypothesis that the Keyblade master and the Princesses of Heart are connected and in hopes that he would find this Keyblade master.
Finally, Xehanort cast away his body and stepped deeper into the darkness in order to find the truth about the heart, darkness and, eventually, Kingdom Hearts.
Xehanort's abandoned body became the Nobody Xemnas, leader of Organization XIII whose other senior members included the Nobodies of the other assistants after they lost their hearts.
Xehanort's heart then became a Heartless. Unlike other Heartless, his Heartless retained a human form and also his memories.
Xehanort's Heartless sought out Kingdom Hearts while Xemnas desired to expand Kingdom Hearts' power.
While Xehnanort's Heartless wanted to release the darkness within Kingdom Hearts to obtain the knowledge he had sought, Xemnas desired ultimate power and to become a complete enity once more.
