"Counter-Attack"
To the guy below me :
You can't do a Counter Attack , but you can Parry Attacks on the Air ( don't know if you can do on ground. )
Basically if you are on the air and gets attacked by someone when you get attacked you press the Defense Button ( exactly at the same time the attack will hit you ) , you will parry and become blue and the Enemy will get stunned for a few seconds. This happens often when you try to juggle the Enemy , then he will parry you and leave you stunned for some seconds.
It was on the Tutorial...