I have not seen any good Lucario players online to this day. The thing that is special about lucario is that the more damage he takes, the more powerful he becomes. His aura spheres get bigger and send people farther and farther. His basic atacks get buffed up a little bit, and his force palm (side special) gets a little more range. However, this does not mean at 300% you are an all-godly-hot-shot. Lucarios peak is at 182% (assuming that on the event "The aura is with me" starts with him at his peak), and his weight is medium, so at 182% a half-chaged smash attack could kill him. Finding a balance of damage is extremely important if you plan to play Lucario. Healing too much will weaken you, but allow you to last longer. Healing too little will keep you powerful, but will have you in a near lethal situation. I find right around 100% is decent enough. His final smash reminds me of good ole dragon ball Z (kamehameha!!), but it isnt as cool. If you can hit someone with it, its ok, but alot of charcters can easily avoid this thing. Kirby, DDD, Meta knight, and jigglypuff can all "hover" in a corner and avoid the blast, while all other characters can just pick a side of the stage, run, and jump. Lucario might not be the best for some people, but his "high risk, high reward" fighting style might be just the thing for some people.