Need to use some TV Tropes linkage here:
- All the talk from the peanut gallery between moves is annoying but typical of anime.
- Yes, Axel is one of the bravest and toughest characters; so, the fact that he, such a strong guy, is so scared now is an indication of just how bad and evil and frightening the Supreme King actually is.
- The swirling black wind is just anime's way of visually expressing the depth of the Supreme King's power and evil. Sure, it can't harm anyone, but it looks bad enough to the viewer, right?