d20 Future: CODEX GALACTICA
Tibanna gas was excreted by beldons (also known as Acid Rainer, huge gas-filled creatures. The gas was a by-product of the vapors consumed by beldons. Tibanna was extracted from Bespin‘s atmosphere as atmospheric gases rose on updrafts through Cloud City’s unipod. The gas was then processed and packed in carbonite for transport off-planet.