Kalavak was the Romulan Ambassador to the United Federation of Planets in 2380, replacing his predecessor, T'Kala, in the wake of her suicide and of Romulan Praetor Tal'Aura's continuing struggle to stabilize the Romulan Star Empire after Shinzon of Remus' coup d'etat. During the invasion of the Borg Collective in 2381, the USS Enterprise-E followed a lead near the Azure Nebula along the border between the Federation, Klingon Empire, and Romulan Star Empire. Anticipating military action, President Bacco had Secretary Safranski summon the Ambassador. (ST - Destiny novel: Gods of Night)