Neptunian

Neptunians are traditional, fictional extraterrestrials that come from the planet Neptune, the eighth planet of the Sol system.
 * The Neptunians are race of spacefaring telepathic Grey-like species in Space Patrol (1963), They have had several altercations with the United Galactic Organization (UGO)
 * In a 1999 addition of the Brazillian science magazine Superinteressante, they made several scientifically plausible species of the different worlds of the Sol System, on of these species is a race Cnidarian Neptunians.
 * The Neptunians are a race of four-armed porcine humanoids from the planet Neptune in Futurama
 * Neptunians just kinda exist in Star Trek