|First game||Metroid (1986)|
Holtz are powerful creatures found in the Metroid series of games. In fact, they could arguably be considered the most powerful creature in the game who isn't a boss. They are flying enemies who stay in flight by the fire that is shot out of the two holes on its lower body. They may be slow, though they have heavy attacks which can deal a lot of damage.
The species presumably became extinct upon the destruction of Zebes.