For my 3rd (and so far last) round against Wizard Guy's Pikachu, I threw out my Sonic at him to see how HE does.
It's been over two years since Smash 4's release, and people are still discovering how Pikachu can be hit at seemingly-impossible distances. The thing is that when Pikachu uses Quick Attack, he momentarily becomes extremely thin by stretching out his body in a zipline fashion before shooting away.
This also stretches out his hitboxes to incredible lengths. So you can end up in situations such as Sonic kicking the air a few feet above Pikachu, but still hitting Pikachu in the process.
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