Reptile Men are a race of lizard-like humanoids native to Eternia. They are intelligent, well-organized creatures who seem to prefer making their homes in warm regions.
The villain Masque was allied with a band of Reptile Men, who he ordered to stop Melaktha and his associates from excavating the House of Darkness. They attacked by night, but were defeated by the combined efforts of He-Man, Ram Man, and Orko. Kor also had Reptile Men under his command.
It is possible, but not confirmed, that Lizard Man is a Reptile Man.