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Upon using Thwack, Hero will make a large circular area appear in front of him after a short delay. Any enemy inside this area when it activates will have a chance to get instantly KO'd. This chance increases the higher Hero and the opponent's damage are. If both Hero and the Opponent are at 100%, the move will have roughly 65% chance of KO-ing. If the opponent is at 160%, the move will always KO. If the enemy isn't KO'd, they will take minor damage and knockback. This move will not appear if Whack does. This move increases its size when Hero is giant.