sarayvonne said:
But can you tell me what exactly is The 13th order ?
They are not called the 13th Order, They are called Organization XIII.
Organization XIII (XIII 機関 Jūsan Kikan) is a group of thirteen
Nobodies, beings without hearts.
The first six members of Organization XIII are Nobodies of assistants of Ansem in his experiments in darkness. The assistants and Ansem built an underground facility in Hollow Bastion, where they conducted experiments with the heart, using themselves as test subjects. After speaking with the off-worlder, King Mickey, Ansem saw the immorality of what he was doing and ceased his involvement. The assistants and their leader, Xehanort, did not share his moral compunction and continued their experiments. This eventually led to tragedy and the creation of Nobody versions of the assistants. Xemnas, the Nobody of Xehanort, became the "Superior" and founded Organization XIII in order to recover their hearts and become complete humans again.
They were originally introduced as the Organization in the game Kingdom Hearts: Chain of Memories and as the Order in the Japanese version.
By Xemnas, an assistant of Ansem/DiZ.
The assistants and their leader, Xehanort, did not share Ansem/DiZ's moral compunction and continued their experiments. This eventually led to tragedy and the creation of Nobody versions of the assistants.
what do they do/are going to do?
They seek to discover the mysteries that lie within the heart and use the power of Kingdom Hearts to become complete humans.