I wrote a fan-fic, Joker's story. But it is just a supposition. If I would know the truth, may be most terrible, but truth, I could understand him a little more closer.

You mean just the Heath Ledger Joker in 'The Dark Knight', right? Coz there are multiple origin stories for the Joker as a Batman character..

^I mean as a whole, basically. Like, one day they officially decided what his story is. The Killing Joke, for example, was one un-official story, of what possibly happened.

So you want one consistant backstory, rather than the different interpretations...

Something like that. Though with something like comics (which are made in several different adaptions), it's not something to easily narrow down. However, Bruce Wayne's story remained the same for the most part. I wonder if the Joker (being a popular character) might get an official backstory as well.

Not something I want persay, just something for people to pander about.

the joker says it himself "i like to think of my past as a kind of multipal choice" thats the best way to look at it

I would like to know.

Yes, it's time we all know.

He's better off remaining unknown, striking fear into everyone he meets....