>>5618028>What is that thing?Some kind of entity that exists in an (Abyssal?) rift to another dimension.
>Why does Kirby grabbing a star turn it into an energy sword?It's not a star, it's a crystal, and it turns into a crystal gun for an aerial shootout.
>Why is that thing’s mouth an eye?You should be asking why its eye is made to look like a mouth in the first place.
>Why don’t the fairy thing’s wings move?Well she doesn't really need to flap them when Kirby's giving her a ride, does she?
>Why does this look like it was animated on an original SNES?It was a late N64 game actually. Pic related is what 3D animation on the SNES looked like.