It's not surprising that PJ is creating a new fictional character (it's a fictional book remember guys!), I mean this is PJ. The same PJ who reduced Merry and Pippin to comic relief. The very same left out the proper end of the story!
So now we have Frodo (albeit for a very short time at the start), Legolas, and now an elfmadien. Next PJ will realise a statement saying RicK Astley will produce the soundtrack...!