Dogon

The Dogon were a thirteen-eyed reptilian race.

History
Strangely for a reptile species, the Dogon evolved on a race with a climate colder than that of Earth. They eventually developed space travel at some point during their history and occasionally traveled to Earth, first visiting it at least in 1666 at the time of the Great Fire of London, usually leaving behind their so-called Sixth Eyes. In 2005, a Dogon spaceship with a crew of twenty crashed in the river Humber and were studied by the crew of Torchwood 1. After the Battle of Canary Wharf, Dogon Sixth Eyes appeared on eBay and became very popular in Belgium. (torchwood.org.uk)

Dogon eyes
Four of the eyes of a Dogon were for sight, six for show, but one of the other three eyes (referred to as the Dogon Sixth Eye) had special abilities. (torchwood.org.uk)

This sixth eye located on the back of the head and was nearly the size of a golf-ball, though looking more like shifting blue marble. This eye allowed a person to look back clearly on their life and allows them to make better choices, especially if ingested. Oddly enough, Eugene Jones steadily gained more physical contact with the world after swallowing a sixth eye and then dying. He was able to influence the mind of Gwen Cooper and eventually became corporeal and seemed to float into an afterlife. (TW: Random Shoes)


 * What the other two eyes could do is unknown, though Dr. Rajesh Singh believed they also had special powers.