During the Galactic Civil War, Gastrula became the terminus of the Great Bantha Breakfast Biscuit Run, a trade route established by the Sullustan Bungo Bung and his droid co-pilot42-RST. Captain Bung made several runs to the world, shipping the popular snack food known as Bantha Breakfast Biscuits aboard his starship, the Chubby Gundark, after realizing that there were many worlds that had no access to the snack. Importing them from the planet Sullust, Bung made several hundred thousand credits over a two week period. However, unknown to both the crew of the Chubby Gundark or the Gastrulans, certain preservatives used in creating Bantha Breakfast Biscuits reacted negatively with Gastrula's atmosphere. The interaction of the two elements caused the Bantha Breakfast Biscuits to mutate into the Giant Amorphous Bantha Breakfast Biscuit. This amoeboid lifeform was a ravenous creature that sought to devour anything in its path. At least one of these creatures evolved on Gastrula, and began eating everything it could find.[1]
Gastrula was home to the Gastrulans. They were a race of four-armed[1]sentient gastropods[3] with spotted, bulbous heads that had eyestalks protruding from either side.[1]