Ultraman is the main character of tokusatsu's famous sci-fi tv series known as the Ultraman series. Ultraman is a giant alien from Nebula M78. He is tall as a building, can fly and shoot beams from arms. He comes to earth to help humans defend earth from monsters and aliens. However, he can only maintain his giant form for approximately 3 minutes on earth unless he recharges solar energy, so he merges with a human. Most times Ultraman stays on earth in his human form, but when monsters appear, he uses a device to turn into his true form and fight them. So far, Ultraman is one of the most famous Japanese superheroes.