Dragon Ball Z is awesome, ha.
That aside, okay. That's good to hear. Well, unfortunately for you, the most important thing when it comes to mastering a character is experience. Which, of course, isn't something you can simply train or acquire in a few weeks.
I'm talking months. I've been playing Wolf for ten months and I would say that I am only now even beginning to come close to mastering him. However, I told myself before even Brawl was announced, that I would make myself a synonymous figure with Wolf. When you think of Marth, you think of Ken, the King of Smash and the man who made Marth famous. I want to be the same thing to Wolf that Ken was to Marth.
That's the kind of dedication I'm talking about.
Let's see here... how can I help? Hmm...
If you were to ask me I would say you can divide "mastering" a character into a few categories: tech skill, mental capacity, and experience. Again, all these things fall under the umbrella of dedication. I can't emphasis that enough.
Tech skill: This will be a little more in-depth than you may think. I'm sure you're thinking Wall of Wolf, Boost Smashing, etc, but it goes beyond advanced techniques. It is important to keep the basics in mind as well. This even goes as basic as DI. I know it may be silly of me to point out, but I'm very serious. You can't master the advanced without mastering the basics. In addition, this includes mastery of all tech KNOWLEDGE in general, not just skill. Understand frames, hitboxes, etc. This goes for other characters as well. You can't master a character unless you have a deep understanding of all other characters. You can take martial arts as an example that may be universally understood. You can't master Kung Fu without at least a basic knowledge of Caoperia, Karate, Tae Kwon Do, Judo, Ninjutsu, etc. A corollary of that also is you need perspective. A frame of reference, by understanding the other characters and technicalities, you more fully understand your own. You can't fully comprehend something or understand it without the opposite. For instance, love and hate. To bottom line it: Tech skill includes tech knowledge. Everything from the basics to the advanced and all other characters including Wolf. Also, the game in general.
Mental Capacity: It may be tempting to substitute "mental capacity" with "mindgames," but I would avoid that mistake. It goes much farther than that. In this current era, it seems to me that "metagame" and "mindgames," or at least their true definition, slowly become more and more distorted and lost. A mindgame is forcing your opponent into a disadvantageous position of some sort and using it to your advantage. That is a very blunt explanation. However, the important question is: Why? Why do mindgames work? Why when I do this does this work? Unless you understand that you are running on "autopilot" and that is no good. You must be actively participating mentally at all times. Never go into auto pilot if you are playing for keeps. If you aren't playing for keeps, it is good to experiment and practice new things. You don't want to become routine. I find watching other Wolf players keeps me from doing this. I can see a style that isn't my own, build on it, and make it part of my game giving me yet another piece of combat I can branch off to. Again, mental capacity is all things mental, not just mind games. Knowing your opponent. Know what they like to do and what their character is capable of as well as your own. Brawl, if you were to ask for an analogy from me, is like Chess, or at least more so than most combat games. It is very mentally involved. Yes, there are technical aspects, but you have to think several moves ahead, and always mix it up. I had something else important I wanted to say here, but I forgot... maybe it'll come back.
Experience: This... is self-explanatory. Research, data, and ability will only take you so far. It is the real life application that is important. If you fail here, then you have failed from the beginning.
Now that I have that out of the way, I'd be glad to help you with specifics.
More than you bargained for, probably, huh?