The Cherbi.
A living calamity that has existed for eons. Not much is known about this colossal pink fluff of ball, but new information may suggest that the Cherbi is a Primordial—a being that has existed for as long as the Universe itself.
No one knows when, but at the time that civilizations have had the capability of moving and traveling through the expanse of space, civilizations have also tried to hunt and vanquish the Cherbi.
Many have tried, but all of their efforts were futile. The past generations of advanced civilizations only stopped when they saw a Messenger—a being larger than several planets, thought to be invincible, was absorbed and eaten by the Cherbi like some sort of noodle.
But of course, in time, that shocking defeat was forgotten, and the new advanced civilizations that rose up tried to eradicate the Cherbi again.
