I realize fan fiction and rights is a stupid question because you are picking up from where a creator has already traveled.
But what about a fictional character I create while writing fan fiction?
In my case, I have extended the history of a favorite series much backwards and tried imagining how things began. In the process, I propped up a new character which is not a part of the original series.
Do I have a right over this new character I have created (partly) over someone else's storyline?