Centaris Seven

Centaris Seven, or Centarix VII, is a planet whose plants secrete a corrosive deadly to mechanical beings.

Fiction

The Dark Heart of Sandokan

Brushguard discovered the corrosive from Centaris Seven and weaponized it into a corrosive gas. He used this gas on the destructive entity Synthos. The Dark Heart of Sandokan

The AllSpark Almanac

Centarix VII was part of the Nebulon Republic. The AllSpark Almanac II