Florius Larsus was a Captain of the Imperial Legion during Titus Mede I's reign. He was the superior in command of Water’s Edge garrison. He was considered to be a good friend by prince Attrebus; they knew each other since they were six years old.
He was surprised to see Attrebus alive when he arrived to Water’s Edge. Attrebus convinced Florius to accompany him in his adventure to hunt Umbriel instead of sending the prince back to the Imperial City. Florius' right hand, Riente, proved to be an agent working for Hierem. Attrebus found Florius dead in his chair, with his head on the table. He had been stabbed at the base of the skull.