|Universe||The Maw Universe|
Gastros are a species of non-sapient, silicon-based organisms made out of molten rock and flame. They exhibit pack behavior and fierce territorialism. It was their predatory instincts and tendency to start forest fires that caused the Galactic Council to deem them to much of a threat to be allowed to continue existing in the wild. A Gastro's fiery nature leads to it needing to be fizzled out via sources like water for the Maw to consume it, as not doing so will result in setting the Maw's mouth aflame.