Roger Krevin Leir was an American podiatric surgeon and ufologist best known as an investigator of alleged alien implants. Leir wrote books such as The Aliens and the Scalpel, and appeared on various radio and television shows, including Coast to Coast AM, claiming he had discovered proof of "non-terrestrial experimentation on man".
★6.3Moment of Contact
Self (archive footage)
2022
★10.0Watchers 2: Signs in the Heavens and the Earth
Himself
2011
★4.5Watchers 4: On the Edge
Himself
2012
★6.0Watchers 5: Let Me In
2012
★8.0Watchers 1: UFOs are Real, Burgeoning, and Not Going Away
Surgeon
2010
★5.0Watchers 6: The Secret Cosmic War
2013
★6.0Watchers 7: Physical Evidence
Self
2013
Watchers 8: Cloak of Secrecy
2014
The Scientific Study of Alien Implants - Part 2
Self
★6.0Watchers 3: Fingerprints of the Supernatural
Alien implants surgeon
2011
The Scientific Study of Alien Implants - Part 1
Self
2004