If
Commander Shepard died in the player's Mass Effect 2 playthrough, the player will be unable to import their save game. Mass Effect 3's story is a continuation of Shepard's story and if Shepard died in Mass Effect 2 that death is considered final.
[44] Similarly, any squadmates who did not survive the
suicide mission at the end of Mass Effect 2 will not return in Mass Effect 3.
[45]