"What if he got elephants after conquering India? XD"
That's what the Himalayas are for! All that hilly terrain will surely make Alexander give up on the elephants? ;)
I imagine if it's an Alexander story that involved Lex Luthor, then it'll probably be a Smallville fanfic, because there's copious amounts of Alexander allusions, from his breastplate, to his coin, to etc. And yes, there is no lack of Hephaestion in those fics either. >.>;