Shielding

Shielding is when you hold the I button(defualt control) and some kind of Orb goes around you. Shielding can block all attacks except grabs. While you shield, the Orb shrinks. If you Shield too much, you will be in some kind of condition called Shield Broken.

Shield Broken
Shield Broken is when you Shield too much and you get stunned. To get out of stunned condition, either wait(not recommended) or keep on tapping your control keys.