So after readin' this baby a second time, I've come to my verdict:
The Joker by Azzarello and Bermejo is a book fans should be aware of what exactly they're getting into. IMO it is by far the most realistic interpretation of any Batman story I've read, which in many senses makes it very different from any other viewer would expect out of the Joker and the rest of Batsy's rouge's gallery of villians; if anything, the story's enviorment reminds me of Miami Vice with it's corrupt and left handed underworld. I find that it was a decent story with stunning artwork, and actually surpasses many standards of the average Batman novel just in execution and motivations in characterization. With that said, let's begin with the Joker:
Joker in this story is pretty much what every other fan has seen. He's very grusome and gritty on the violence scale, his quick witt personality and jokes suprisingly had me laughing throughout the story, and in flow of the story he's character that all fans should find respect for. However, I didn't really find his addiction to medication and had no motivation for butchering people to pieces; now some of them like the old couple and Tommy Bang Bang had it's overall classic Joker demenour, but other than that some of it really fell flat for no particular reason. That and him just pinching money was dissapointing due to the fact that it really brought down his emphasis on anarachy and self reliance; not the kinda Joker I would expect, but I would critisize that just because it's new fresh of the air.
Now Jonny Frost was interesting because he was the main character of story telling his thoughts of the Joker and how he was getting a piece of it all; thing is, you really don't give a s*** about this guy. He's somebody we've seen before whose kinda full of himself and just enjoys taking the highlight under Joker's wing as being somebody everybody would know; it was also kinda weird seeing of all things a Confederate flag in his room in the story, so IMO it's know doubt he was kinda racist towards Croc and some of the gang. Just a theory of mine though; overall, pretty much a character who also falls flat who none of us care about what so ever, which I could tell that was completely intentional; an easy way out to make a character, but just having him be that way just because how Azzarello had planned it that way was impressive.
Okay, since those two guys are outta the way, let's talk reinvented characters: Croc was awesome and loved how he was treated like a henchman; him also being a cannibal and sense respect and loyalty to Mr. J was something........ we could all respect honestly. LOL Riddler and Penguin were interesting portrayles of the character style wise, but none the less pretty much survive in this novel's atmosphere and actually stay true to what you'd see in the comics; easily the most adaptable and probably the best interpretations including Croc that could really make it in Nolan's world and soar with flying colors. Didn't appreciate Two-Face being kind of a Lex Luther kind of mob boss, but don't let that get by you though; some of his traits we're actually very true to the sources and found suprisingly brilliant such as him having control of half the city and especially the scene where Joker says he'd find away to murder either Harvey Dent or Two-Face; not both, but just one. Ain't that awesome?

LOL Harley as a stripper was a big turn-on no doubt, but wasn't really something I appreciated in the realm of her personality; however, her having no dialouge in the story and doing things like skinning one of Jokers old time thugs alive was scary as hell. Gives a reason why Joker loves her and keeps her around: case and point, you mess with her, you don't make it out alive. And on that note, I found her to be one of the better characters for it; something I've really wanted to see from her for a long time now and appreciative that I finally saw that side of her.
In conclusion, besides some of the weaker points in story and character development, I find that it was one of the better stories out there; you just have to be a dedicated fan will to try something daring and different from anything else. Mainly, it's the perfect book for begginers who aren't aware of any Batman or Joker stories; I guarantee you they'll be really impressed by the book. Others that are hardcore traditional fans who might not find this book to be as memorable and moreover not their cup of tea; that's cool though. On my behalf, I really enjoyed this version of Joker and how he deals with the underworld; I admit some of Azzerello's execution were incomplete and background characters like Two-Face's corrupt cop who's after Jonny with the divorce papers are useless and as well as some of Joker's motivations, but it's still one fun ride. Some of it just don't take it too much to heart and I'll easily think of it as a book no fan should skip for their collection.