I have a question, Kingdom Hearts 3D Dream Drop Distance is based on sora and riku getting ready for fighting the real Xehanort, but in the trailers it shows Sora fighting Xemmnas and Riku fighting Ansem?????, and how does the resurrection of Xehanort happen cuz it shows him in his younger version but didn't he take over Terra's Body and then became Ansem the Wises Apprentice?

Have you even played BBS? The reason it is showing young Xehanort is because IT IS TERRANORT!

Xehanort the pedo became Terranort after he combined his heart with his body... then he turned young.

Master Yen Sid said that more than one Xehanort coming back. So that answer is unanswered and play KH3D to find out....

Since he said that, maybe thats your answer?

They are taking the Mark of the Mastery test in order to see who will become the Keyblade Master, and defeat the Xehanort(s)

I don't think that's what he's asking Shana. And was the picture of Xion really necessary?

 

Anyway, if you're wondering why Ansem, Xemnas, and a Younger version of Xehanort are in the Realm of Sleep. Well the clue's in the name. It seems that in the realm of sleep, the people that Sora and Riku meet there are simply dreams, in other words not real. Xehanort was resurrected at the end of KH2, when Sora and Riku defeated Xemnas after Ansem SoD. All the different personas of him in the realm of sleep are not the real Xehanort that has been resurrected.