Oh, how I miss Breaking Bad. It's really been a great ride for me. Best television drama I've ever seen and one of the best stories I've ever come across in fiction. To an extent, it kinda hurt TV for me a bit since nothing else I saw is anywhere on the same level.
Here's a fun little comparison I feel like sharing. I'm a big Spider-Man fan and was pulling a Spider-Man marathon a couple of days back and noticed a few similarities between pre-Heisenberg Walter and pre-powers Peter Parker. In a weird way, Walter White can be considered an evil adult version of Peter Parker.
Most versions of the Spider-Man origin boil down to the following:
High school student Peter Parker. A genius but nerdy scientist. Has had bad luck throughout most of his life. Never really had people in his life who appreciated him enough or payed attention to him enough except for his aunt and uncle at home. Feels the world has given him nothing but crap since he was little and essentially hates his life (especially at school).
Then he gains his powers. As his powers develop, he begins have this "awake" feeling he hasn't had in a long time - a certain level of happiness that he feels has been missing from his life. He has a feeling of empowerment that he usually, in most incarnations, uses to stand up to people like Flash. Eventually he starts using his powers for personal gain (specifically money), both his spider powers and his genius-level intellect (by creating the webshooters). As he continues to get more and more wealth and popularity, a bit of ego emerges from him. When he first creates his webshooters in AF #15, he states "They laughed at me my whole life for being a bookworm but only a genius such as myself could invent these". Later he lets a burglar get away because, as he said himself, "I'm only looking out for Number One - Me!" What exactly saves Peter from continuing on that path? Uncle Ben's death and the lesson he learned from it.
Peter also worked as a high school science teacher for a period in the comics.
Now, that's not exactly the same character arc as Walt's. I wouldn't even say they're mostly similar. I also think Peter didn't even have 10% of the ego issues Walt had. However, I do think there is
one thing they have in common. Both are brilliant men that whose lives have given them nothing but crap. Then both get a chance of rebelling against the status quo life has assigned to them and becoming wealthy and famous (although Peter gets that chance entirely by accident while Walt seeks it out himself and gains it in the process, though at the loss of his life, reputation, and family). Then in the end, one lives on as a superhero while the other became a supervillain and eventually led himself to his own downfall. I think there is a certain degree of similarities between them in that specific context.
edit: Walt also shaves his head to give himself confidence and to not recognize himself while he is doing all these horrible thing as Heisenberg, similar to how Peter gains a level of confidence and a chance to be someone else when he puts on the Spider-Man mask.