|System||Jovia System (Presumed)|
|Notable Species||Shapeshifting Bioforms|
Jovia XII is a little-studied planet and likely the twelfth planet in a system most likely called the Jovia System; in fact little else is known about the world except for that it is home to a species of shapeshifting biomorphs. Jovia XII is known for a special type of steel known simply as Jovian Steel, which the inhabitants produce. This substance is extremely hard, and even the most heavy weaponry does not appear capable of destroying it, although tremendous weapons such as a black hole likely could still crush it into a singularity. This metal is notable for having been used in the construction of the Galactic Federation base on the planet Norion.
- Metroid Prime 3: Corruption (First mentioned)