Rurik the Damned was a great Klingon warrior, famous for conquering the Zora Fel and liberating Vrax.
A monumental statue of him stood in the Hall of Warriors on Ty'Gokor. In 2373,
Gowron proposed a toast to him. (DS9: "Apocalypse Rising")
This character was only mentioned in dialogue.
According to the script, his name was pronounced as "RUR-ick".