S1·E1 Ultra Operation No. 1

The episode that started it all! This episode shows how Ultraman came to Earth, and during his chase with the fugitive monster Bemular, a tragic accident that befell Science Patrol member Hayata forces the alien to save the Earthling's life by merging with him. Thus, unbeknownst to anyone (even his Science Patrol teammates), Hayata and Ultraman are now one and the same! The course of the episode has Hayata and his teammates coping with the terrifying Bemular.