3 GF Troopers on Cylosis

Federation Marines on what may be Cylosis.

Troopers v Sylux on Cylosis

Sylux facing down two Marines just after taking down one.

Cylosis is given as Sylux's origin in the opening cinematic of Metroid Prime: Hunters. Since Sylux is surrounded in mystery, it is debatable whether Cylosis is Sylux's actual homeworld, or simply where Sylux stole the armor, Delano 7, Shock Coil, and Lockjaw that the Bounty Hunter uses.

The opening movie cinematic in the game shows a location that may represent Cylosis as a plain and lifeless-looking surface, with blue-gray dust (or possibly snow) storms.


Cylosis is the circulation or streaming of the cytoplasm within some living cells.

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