Metroid Database Bestiary

Small insect-like creatures that live in swarms. Mellows are extremely weak creatures that should pose little threat. Their only challenge comes from their erratic flying trajectory.

A single shot with your beam will kill a Mellow. You just have to worry about multiple ones at once.

Mellows are found only in one room in the entire game. In Zero Mission, they were given hives which you have to blast through to progress.