Jimmy Ellis was trying to make it as a singer in Nashville but people couldn't get past his voice sounding scarily like Elvis'. When Elvis died in 1977, record producer Shelby Singleton marketed Jimmy Ellis as Orion, a mysterious mask wearing singer and used PR to elude that Orion was Elvis. This bizarre scheme gained cult success and created the "Elvis is alive' myth.
You can rent or buy Orion: The Man Who Would Be King on iTunes, Google Play, Amazon Prime, and Youtube. It is not currently available on Netflix.