Ebbe Casset served as an ensign within the Republic Defense Coalition throughout the High Republic Era. Back in 229 BBY, she found herself posted on Eriadu, working alongside her comrades, who were also RDC officers: Captain Pikka Adren, Captain Joss Adren, and Admiral Pevel Kronara. She was related to Hedda Casset as her niece, the latter of whom had died amid the chaos of the Great Hyperspace Disaster.