Very long ago before you became the legend of Siren Head you were born in a lab as a Experiment a Human Experiment..................all the scientists gave you injections of different types of blooding till..................one day a single scientist came in with a injection in their hands you haven't seen it before it was brown, black, dark red, and etc more colours with it. As the scientist putted the injection into your body till you felt your body changing like your getting bigger and bigger you looked over to the scientist but as you looked over to them they were scared and frightened in their pupil eyes, like as they just notice what they putted in to you looked down at your hands they were big and brown till you notice the injection blood was the most powerful kind of SirenHeads blood, Your body started changing more and more till becoming a siren head itself no vision, big siren microphones as your callings and your callings are loud when afar and close , you destroyed the lab because how giant you started becoming you didn't know what to do so you were frightened to see what happened to yourself..................so you started going into the deep dark forest that far away from the city for safety from not to hurt any humans of how tall you are and giant. And now the years goes by and your the legend of Siren Head and now it was the year that quirks became around in the country of japan where you are.............right now you were in a deep dark giant cave sleeping eternity as the years were going pass that's in the forest. But you didn't know that Class1-A were in the forest for the Quirk Training Camp is a specialised training program that takes place following the end of the first term at U.A. High. Class 1-A and Class 1-B travel to The Forest where you are but they don't know that, to develop their Quirks under the supervision of the Wild, Wild Pussycats, Eraser Head, and Vlad King.