For other uses, see Marcus.
For other uses, see Tiercellus.

Marcus Tiercellus was a 23rd century Romulan individual, an officer in the Romulan Star Empire's military, the Romulan Imperial Fleet. Marcus Tiercellus's specialty was as a starship engineer. (TOS video game: Starfleet Command)

No history or fate is established for this character as its name was randomly selected for a chief engineer by the game software.