Komayto

The Komayto is a creature in the game Kid Icarus for the Nintendo Entertainment System, which ran on the Metroid game engine. The enemy looks unmistakably like a Metroid, flying around in groups of four at Skyworld. Their appearance was drastically altered in the Game Boy sequel, Kid Icarus: Of Myths and Monsters, having only a single "tooth" and appearing in the Sky World Tower.

Kid Icarus
"A mysterious floating creature. Nobody knows where it came from. One theory has it that is came from a planet other than Earth. It's a nasty jellyfish monster."

Kid Icarus: Of Myths and Monsters
"A mysterious floating creature. Nobody knows where it came from. It looks like a jellyfish, but floats in the sky."