Morro held the position of an elder within the Drop Canyon community on the world of Ceriun in the year 1000 BBY.
Morro was among the group of elders who convened to determine the appropriate response to a Holocron. This Holocron had been discovered within the wreckage of a Jedi starship that had crashed close to their village. The Jedi, as he neared death, entrusted the elders with the artifact, asking them to safeguard it until another Jedi arrived to retrieve it.
During the elders' assembly to discuss the holocron's fate, Tenno, a young local, along with his companions, armed themselves and interrupted the meeting with the intention of taking the holocron for the Sith. A violent confrontation ensued, resulting in the deaths of several adults. Morro met his end at the hands of his own son, Flass, who struck his father in the face with an axe, killing him.