Airthorn

From Wikitroid, the Metroid wiki

An Airthorn is an enemy from Metroid Prime 2: Echoes that was removed from the game. It still appears in the code, and a log book entry for it exists, but it can only be seen and scanned from within a Secret World in the Dark Transit Station.

Logbook Entry:

Mechanism: Airthorns Rogue airborne mechanoids.

Targets are small and travelin packs for safety. Avoid contact.

The Luminoth made the Airthorn to patrol local airspace. The small, speedy machines were a boon to the war effort until their programming failed. Now rogue, they serve the Ing as fiercely as they served their creators.