Papilio ulysses, a metallic blue butterfly endemic to New Guinea
Emperor | NYPD Blue | Toronto Blue Jays | Blue Peter | Holy Roman Emperor | Wilhelm II, German Emperor | Joseph II, Holy Roman Emperor | Maximilian I, Holy Roman Emperor | Roman Emperor | Frederick II, Holy Roman Emperor | Blue | Blue Ridge Mountains | Emperor of Japan | emperor | Blue Öyster Cult | Blue Note Records | Roman emperor | Frederick I, Holy Roman Emperor | Charles VI, Holy Roman Emperor | Francis II, Holy Roman Emperor | Blue Heelers | Ferdinand I, Holy Roman Emperor | Charles IV, Holy Roman Emperor | William I, German Emperor | Pokémon Red and Blue | Winnipeg Blue Bombers | Blue Nile | Hongwu Emperor | Sigismund, Holy Roman Emperor | Godspeed You! Black Emperor |