User blog comment:Tristan Tsunami/Theory on the Dragon Slayers 2/@comment-14885023-20130416011608/@comment-24.130.179.159-20140807223101

@redeyed raven While the idea that there is only one dragon of each element is a good one, it is proven to be incorrect when Atlas, a fire dragon who came through the Eclipse portal, recognizes who Igneel is when Natsu yells that he is Igneel's son If I remember correctly, he says he is a friend of Igneel, and since Natsu is Igneel's son, he decides to fight for humans (Just so you know, I haven't seen the actual scene for this in a while, so I might have gotten the details wrong)