They call it the attack/shout that breaks the microphone. (I don't particularly know why; it's probably a memetic thing that has to do with the series.)
Incidentally, he's shooting down a nuclear missile the size of a football stadium.
When it comes to flashy anime/video game attacks, nobody outside of Super Robot Wars does it quite like Tekkaman Blade. (And since he's been in at least one Super Robot Wars game...)
What makes this even funnier is that the other Tekkaman can Voltekker/Voltekka as well, but his is usually less impressive.
And gives him a headache.
And they deal billions of damage in combo attacks.