Ultra Signs (ウルトラサイン, Urutora sain Ultra Signs?) are a series of codified messages made of light sent by Ultras to communicate to each other when they are far away. They are usually used to communicate in times of dangers as a warning sign, to request Ultras to journey to certain locations, or to send messages from one Ultra to another. Each Ultra has a predetermined sign, a personal signature that holds their true name in the Land of Light which tells other(s) who is sending the message.