Vizznr was an Alphan representative who was sometimes referred to as "Dominator of the Alphans".
In 2269, Captain James T. Kirk encountered a projection of Vizznr on the surface of Onyius II. Vizznr pleaded with Kirk to help her destroy her people's enemies, the Omegans. Kirk refused to aid her in hostile actions against the Omegans, and instead convinced her that the two races were very much alike and to give a genetic sample for the joining of the two races. This was a major step towards the two races overcoming their differences. (TOS video game: Judgment Rites)