“Please, Luna, watch over me tonight as I venture across your night sky once more. Let my wings burn bright and ward off the evils that call the shadows home, that I might swiftly blaze a trail of fire towards my next destination.”
 
This is Starry Night. He’s gone through a bit of a design change since my first doodle of him –> [link]  
Starry Night is a postal worker, specialized in over-night deliveries all across Equestria.  
He’s actually an earth pony, but had magical wings implanted in his back so he could fly. His wings give off fire whenever he flies, which is the reason he’s allowed to fly across Equestria at night. As he flies his wings burn and give off a light that wards off any evil creaturs that come out at night. During the night, if he’s flying fast enough, he ends up looking like a shooting star.  
The bracers on his legs are also magical and allow him to walk on clouds, even though he’s only an earth pony.  
StarryNight’s mark is two stars. His mark will also glow during the night. You can see how it relates to his career choice.