Maybe not for every single being on the planet. But I'd say there is undoubtedly a "definitive" take for every character, for a large majority of the fans.
I know there's the whole argument about many different interpretations over the decades, but truth be told, only one or two of them ever really lasts, and is upheld by the fans for years to come. That's how you define what is "definitive".
Well yes there has been some that have stood up much more then any others, but that does not really make them definitive in my mind I guess. I mean when I do all my stuff for my minor in ancient history there are some theroies in the ancient world that have been carried on for a long time, for some hundreds of years, yet they are not the true version of what happend. Poor example but I'm sure you get what I'm trying to say. Popularity I don't know if that really means definitive. Just learning so much about history latley, and how many "popular" and common ways to look at certian events are wrong, and not the definitive explanation of an event, and even the sources at hand are questionable as well.
Hope that makes sense Crook lol I'm so tired and have a horrible cold. My head is aching.
Why would you consider that the definitive? That Joker barely lasted a few years. It's been overshadowed ever since with the prankster/comedic psycho clown interpretation. Nolan has been the only one to harken back to those days.
I guess some would claim definitive to be the original concept or document. Such as I'm sure if some one found the original scrolls to what some religous prophet said, it would be seen as more the real deal. Yet again lol sorry for my history comparasions.
I guess how I see it is those comics are older, and maybe in 30 more years people will not remember TKJ as well, who knows time will tell. But sometimes I don't think lasting through time makes anything more "true" or definitive is what I guess I'm saying. But I do have a horrible cold so maybe I'm talking jibberish. If so slap me.
The 70s/80s Joker is who I'd say sets the bar for who and what Joker is. Same with Hamill's take, which takes a lot from those eras too. Notice how not many people mention any other presentations of the character.