Drivel as it appears in Metroid II: Return of Samus.
Drivels are flying creatures that inhabit SR388 in Metroid II: Return of Samus and Metroid: Samus Returns. Their behavior consists of moving back and forth in the air. When Samus approaches, they spit drops of red liquid acid. If this drop hits the ground, it will burst and ricochet. The drop makes an explosion sound. The drop can be shot to produce an Energy Capsule. In Samus Returns, they have a light green color and fly freely through the air.
Metroid II manual
Metroid: Samus Returns
"They move back and forth in the air. When Samus approaches, they will spit a strong liquid acid."
Trivia
- It is unknown if the Drivel species was infected by the X Parasites, as Samus never encountered any Drivel-X in Fusion.