Proboscum as it appears in Metroid II.

The Proboscum is a harmless, invulnerable robotic drone in Metroid II: Return of Samus, found on SR388 malfunctioning. There is much speculation over its original purpose, but the manual for the game implies that they are some type of worker robots created by the Chozo.

Their long "noses" can be used as a platforms, but they will continuously flick down, so Samus must be quick when doing this.


"Originally programmed as a worker, not a fighter, this robot is out of order and out of control."


  • If Samus tries to use the Spider Ball to climb the Proboscum, the screen will shake violently until the Proboscum flicks down.
  • Proboscum do not appear in Metroid: Samus Returns, the official remake of Metroid II.