Richard Matheson
"Little Green Men" was written specifically as a way for Mulder to question his belief in aliens. The episode features the first appearance of an extraterrestrial, because series creator Chris Carter felt it was time to unveil one. In addition, the episode introduces the character of Senator Richard Matheson. Matheson was named after the sci-fi and horror writer Richard Matheson, who wrote many episodes of "The Twilight Zone".