theory i ahve posted this 2 times. did anyone notice that when you fought a dusk for the first time that roxas summoned the keyblade the same way that terra does in one of the trailers. i think that when terra fused with ds or mx he used his last bit of strength to control the ds or mx side to fuse an injured ven with sora then when the silver haired xehanort lost his heart that the terra side regained form but as a spirit. because he appears by sand and his name means land. he still had a heart because he got angry by thinking of mx. also i heard from somewhere that the apprentices took four paths each have their own path. aqua = path to light ven = path to twilight or dawn mx or ds = path to darkness terra = path to ? castle oblivion had all paths but one the path that terra took. that means castle oblivion = sunset horizons. this also eliminates the theory of riku getting the gayblade from sunset horizons
connection betwwen terra and roxas when roxas fights the dusk in front of the mansion the firts time. he summons the kingdom key the same way terra does in one of the trailers. i believe that when terra fused with ds or mx he had temporary control of himself and fused sora and ven with mx or ds's power. thats also why sora can wield the keyblade. not to forget i heard from somewhere online that each of the apprentices took a path four paths. four crossroads. ven = path to twilight aqua = path to light terra = path to ? ds or mx = path to darkness the same crossroads are in front of castle oblivion. the place where riku, mickey and ansem the wise met. the only path missing was terra's. sunset horizons = castle oblivion. this also eliminates the theory that riku got the gayblade from sunset horizons
connection between terra and roxas did anybody notice that when roxas summoned the kingdom key to fight a dusk for the first time that the way he summoned it was the same as terra when he summoned his keyblade. i think that ven and sora were fused by terra when he fused with either mx or ds, but he could only control the ds or mx side of him for so long. you are probably going to say that he didn't fuse with ds or mx but when xehanort lost his heart, that the terra side became a sort of spirit. thats why you were able to fight. he still had his heart because he got angry when he thought of mx. i cant remember where i heard it but i heard that there were 4 crossroads and each apprentice took one. Ven = path to twilight aqua= path to light terra= path to ? ds or mx = path to darknesss but the place where ansem the wise , riku, and mickey met also had the crossroads. except the one path that was gone was probably terra's sunset horizons = outside of castle oblivion