I want to know what Zoro's past is. I want to know who he is. And why a young boy (who seemed to have no parents) showed up to challenge a Dojo, while having never held a sword before in his life! I mean, why would he do that? And where are his parents? Wouldn't they be looking for him? I have a theory on this. It's in the One Piece Fanpop in Articles. It's titled: Parents Anonymous- Who are they???

I remember seeing the little green haired boy bursting into the dojo challenging the master... and thinking 'where the heck did you come from Zoro? Why are you here? Are you a street rat? Did your parents die and now you want to avenge them? Do you even remember them?' I'm really curious about it