A pegasus, White covers the edges of his ears like a halo in the sea of light tan brown that his coat expresses. His mane is styled in a straight cut path of black wildfire that runs from his forehead to the bottom of his neck with bits of white patches on the lower end. His snout is a white white cap around his mouth till it faded to light brown, which then goes on towards the middle and fades to a pale brown. His mane, black as the ash the falls from a volcano with cruel, fossil amber in nature. His legs are jet black up till a little over the knees where they become part of the pale brown of his body.
His taupe cap has pockets to set his wings which keeps the cape in a fixed position. His light beautifully designed ultramarine blue and grey shaded suit with a purple trim to hold it together. Overlapping stash sheets this ornate light armor has depicted scenes of his family's legacy. The saddle is a black velvet, smooth like those ropes you feel when waiting in line to higher end club. The back has a slot to allow his hair to stick out and covers the entire of his back of his neck. Topping it off with the Banner sigil of his house.
He had early in the appearance of this 'Prince'. Martingale had used his influences and tactful skills to allow the prince to gain ground against the Equestria. With promises of control and power the twin sisters would have never given him and fellow nobles would steal from him he decided to aid the new alicorn. He was tasked to keep the whole city prisoners as they had negotiations. They would release the city if the princesses surrendered a fort in the east, which was very important in the war and would spell a major victory for the dark prince's ambitious.
The princess would likely send someone she trusted to stop them, but it mattered not. Daybreak would be the dead line for the lives of the ponies.