You know how at the end of the TGS trailer you see Xehanort kill Braig. What I think happened was Terranort wanted revenge and killed Ansem the Wise's two favorite disciples, then he killed his partner Briag, and started the Organization XIII. Parts of Terra became Xemnas, and parts of Xehanort became Ansem. This would make sense, because if you saw Blank Points you would notice that Ansem the Wise and Ienzo look at Terranort, and it's shown that Braig is his partner. This is a cutscene showing how the Organization XIII was made, and why it was. It was all an experiment Terranort wanted to do on the heart, he wanted to see if their Heartless would make another form, the Nobodies, and what I said above, revenge, and to start a group. In KH2, Terranort came up to Ansem the Wise and he told him "No" or something. Wouldn't it make sense if by doing this, it was to go against him and his disciples? This is just my theory and I have confirmed nothing. What do you think? I always found the end of that trailer odd, and if you watch the 1000 Heartless scene and Blank Points, it makes that part stranger.
You know how at the end of the TGS trailer you see Xehanort kill Braig. What I think happened was Terranort wanted revenge and killed Ansem the Wise's two favorite disciples, then he killed his partner Briag, and started the Organization XIII. Parts of Terra became Xemnas, and parts of Xehanort became Ansem. This would make sense, because if you saw Blank Points you would notice that Ansem the Wise and Ienzo look at Terranort, and it's shown that Braig is his partner. This is a cutscene showing how the Organization XIII was made, and why it was. It was all an experiment Terranort wanted to do on the heart, he wanted to see if their Heartless would make another form, the Nobodies, and what I said above, revenge, and to start a group. In KH2, Terranort came up to Ansem the Wise and he told him "No" or something. Wouldn't it make sense if by doing this, it was to go against him and his disciples? This is just my theory and I have confirmed nothing. What do you think? I always found the end of that trailer odd, and if you watch the 1000 Heartless scene and Blank Points, it makes that part stranger.