Riva was a famed mediator from the planet Ramatis III. He was a member of his world's ruling family, all of whom shared a genetic condition that rendered them deaf. To communicate, Riva used a chorus of telepathic aides who spoke for him. The trio of telepaths represented different aspects of Riva: the "Scholar/Artist", the "Warrior/Adonis", and "Balance" who held the other two together. Riva was well known for mediating several treaties between the Federation and Klingon Empire; in fact, before Riva, there was no Klingon word for "peace-maker".