Alot of what sorrow has said is untrue. First off wolf does not get punished harder than fox. While he has a total falling speed higher than fox and is heavier, fox still has what i believe to be the superior acceleration. Even then, falcon fox and falco in melee were combod equally, its just that falcon had the bulk to be able to be combod for longer than the spacies who were at kill percent after a few hits. Also if anything, wolfs superior weight not only allows him to live longer and crouch cancel for longer being 10 units higher, but it also means that it is harder to act off of grabs when chaingrabbing him, though regrabs are mostly the same between the three spacies.
As it stands wolf is pretty much a superior spacy and has a likeness to mario. Wolfs strengths over the other two are that he has the best recovery, he lives longest, he has the best crouchcancel along with options out of it, he has the strongest and broadest punish game with an actual killmove finisher out of it, and has defensive skills unmatched by the other spacies. He is one of the highest jumpers in the game, nearly as high as falco, and is one of the fastest characters in the game, faster than charavters like marth sheik and pikachu and only slightly slower than fox. His airspeed is superior to both and his dashdance is one of the longest in the game, which is a luxury to have such a funtional dashdance. His jumpsquat is averagely good and his wavedash is decent. Even crouchcanceling, which most people claim is a weakness of his, is faulty against him at best due to his great mobilty and grabs, his strong dair meteor which is actually bad to crouch cancel, and his ability to multishine and shinegrab on crouch cancelers, plus he can jump over low hitting crouch cancel options such as down smashes and respond with dairs.
The only downside to wolf is that his approach options are weaker, but this matters little in the face of wolfs many advantages, and the fact that wolf can play a bait and punish game superior to falcon even, and he has good defensive options that he can abuse in the neutral. Even his approach isnt too bad since he flies nearly as far as falcon when he performs a running jump, and this coupled with a dair or a fair followed by a shine is pretty safe. Much of his approach weaknesses are nullified anyway by platforms.
Wolf is far easier than either fox and falco, and he has the best dsmash out of the three. All of his smashes are strong and fast. His uair and bair and his projectile, not to mention his movement in general are also very reminiscent of mario too, so if you enjoy mario try playing wolf. Hes good and also fairly technical as well.