Follow-up Tips for LucarioDouble Team:
The most fun of the defensive abilities for whoever has them. Just like in pokemon, it makes you harder to hit. Time it just right...

And you counter attack anyone who takes a swing at you.
It is a very important skill to master as you play Lucario.
In Sudden Death:
Have your lazorz charged at all times. Double Team is, er, double important here. Pulling it off right = insta win. Pick your spot, like with anyone else, and nail them.

Awaaaaaay he gooooes.
It's easier for Lucario, since his Aura is so strong, but it still only takes one p***k to take you out. Be cautious, take your chances, but dont go overboard.