The Fvillha class (English: Praetor) was a dreadnought class in service in the late 23rd century. It was the heaviest and final variant of the Condor-class dreadnought. (Star Fleet Battles) The IRW Colossus was destroyed in the final assault against the Mirak homeworld in 2386, after a century-long lifespan. (RIS Bouteina: "Planet of the Cheaters") Also, it was once thought that the Fvillha-class was a predecessor of the D'deridex-class. In 2293, there were 14 Fvillhas in service and ten more authorized by the Romulan Senate. (TOS video game: Klingon Academy)