Well, without more context, it's difficult to say precisely. 'The Black Joker True Story' might be a story that has elements of mystery, perhaps related to a game or a subculture where the term 'Black Joker' has a special meaning. It could be about a character who defied norms or had a unique role in a particular situation.
As we don't have much information on 'The Black Joker True Story', it's possible that the main character is, of course, the Black Joker. There could be supporting characters like family members who either support or oppose the Black Joker's actions. Or there could be rivals in a game or in a social setting that play important roles in the story.
The Joker is purely fictional. It's a creation of the imagination in the world of comics and movies. There's no real-life basis for it. The character and the plotlines are crafted to engage and entertain the audience through imaginative storytelling.