In X7, with you as Zero, when he warps in, he says \"Oh, no! Not this place again!\" or something along those lines. Is the Zero part in the X7 intro stage the one from X1?

Yes, its been pretty run-down since X1. Zero did zoom through all obstacles in X1 in time to save X from Vile, ya know, so no wonder he still remembers the place.

Yeah, its wierd in a sense of memory. Plus, where was Zero in the X1 intro stage?