From the Super Mario Wiki, the Mario encyclopedia
Thunder Wham! is Donkey Kong's Super Ability seen in Mario Strikers Charged. Before Donkey Kong can use this special move, he must first collect his special item, shown as his own head. After the item is used, he will slam the ground, and send a large shockwave across the area. It has a huge radius, and can blast away many players, even if they aren't close to Donkey Kong. It also makes the field tilt for a few seconds. Donkey Kong can then proceed to do a Mega Strike. A similar move is Daisy's Crystal Smash! move, except Thunder Wham! has a larger radius and takes longer to perform. Thunder Wham! was seen briefly in the intro movie.
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