dood the bloo hair looks like a chick not riku the old man is the orgin of the heart less duh

OK you probably know who is the other knight I know it is Riku and Sora but that isn't Squall...tell me please I gotta know...??? ---- The knights are Ven, Aqua and unknown... Ven is latin for sky, just as Sora is Japanesse for sky. Aqua is latin for water, just as Kairi is japanesse for water. So it is assumed that the third's name will mean land in latin, just as Riku's is in japanesse. Also Tetsuya Nomura has come right out and said that ven looks like Roxas becuase he is somehow associated to Roxas, and therefore associated to sora. Hope this helps.

None of the people (aside from mickey) in the trailers have anything to do with the first two kingdom hearts games.