User blog comment:StrawKid/Who is he/@comment-3060121-20120615161226

Its a new character, it is the person who CC reminded Law of. And he is there using CC just like Law is in order to find the same thing that Law is searching for. ... unless Law was searching for this person.(gasp)

Other option- This is a WG official who has a decent to impressive amount of strength. The reason Law fell is because in order to get the warlord title he had to turn his heart in along with the others.

Last option- Law removed his own heart and put it in a safe place so no one could stab him in it(literally) and someone stole it ... the person in front of Law now