Bilium is a small planet that shares its star with four other planets. It is inhabited by a sentient, gaseous "Global Exterminator" virus called Miteralis, which led to its being quarantined.
Bilium is one of the planets that can be scanned when the Space Pirates' Astronomical Holographic Projector in the Observatory of Phendrana Drifts is activated. It is shown being orbited by three moons.
- "Scans of the Spiral Sector detected a massive energy spike emanating from a Wanderer-class planet identified as Tallon IV." —Space Pirate Data "Contact" (Metroid Prime)
- "Planet Bilium
Mass: 3.8 trillion teratons. Profile QUARANTINE.
Atmosphere is rife with Miteralis, a sentient gaseous Global Exterminator virus." —Scan Data (Metroid Prime)