Diablo lore question, since I'm reading some of this installer story summary. Did they change the player character in Diablo 1 to be the Eldest son, Aidan? or has that always been like that? I haven't touched read or played anything about Diablo in a while.
The official story is that Aidan accompanied the adventurers from the original game into the catacombs below Tristram, and that he was the one who took the broken soulstone and shoved it into his forehead at the end. He was the Dark Wanderer in Diablo 2.