H'rol Hyrnn was a 23rd century Hydran individual, an officer in the Hydran Kingdom's military. H'rol Hyrnn's specialty was as a pilot, and by the 2280s decade, H'rol Hyrnn was a starship helmsman. (TOS video game: Starfleet Command)

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