Mercury was the messenger of the Gods (Gemini)

First and for most I represent the Gemini star sign its who I am am pretty sure there are other Gems but just too put it out there the history of this magical star sign needs to be understood.

The Messenger God
The Mutable Air sign Gemini is ruled by Mercury, messenger of the gods. Mercury??s nickname was Quicksilver, which is what we sometimes call the metal mercury. If you've ever broken a thermometer and held a ball of mercury in your palm, you have experienced the mutability of Gemini'mercury is the only metal that is liquid at room temperature. It is as impossible to grasp, hold and contain as Geminis themselves. If you've ever dated a Gemini and become frustrated at their sheer evasiveness, believe me, it's nothing to the frustration Geminis experience at their own selves.

Mercury needed all the wings he could get because, as Olympian messenger, he was able to go to all 3 realms: heaven, earth and the underworld. He could hang out on Olympus with the other gods, roam the earth disguised as a mortal, and he was the only being (besides Pluto himself) who could travel freely to and from the underworld.