- For other uses, see Tiercellus.
Tiercellus was the supreme commander of the Romulan fleet in the early 23rd century. He was nicknamed the "Eagle of the Romulan Empire". By 2267, he had retired to a quiet life, and had his the point of not worrying about the words he used, but was still considered to be extremely honorable.
After their encounter, the Praetor called Tiercellus back into active duty. In active duty, he served again with his weapons master and friend, Hexce. During the course of that action, he eventually died at the side of Hexce. (TOS novel: Web of the Romulans)