Upon arrival the other equine's in the Lord's stables thought the mare a fool to take on an orphaned colt, but she'd hear none of it. They also scorned at his pure ivory coat. But beside the minor taunting of the others, the colt grew quickly on the milk of another mare who was foaling her own offspring.
Somehow, there was always something different about young Bleak, as he'd been dubbed. He never wanted to train as the other young foals would, for their soon entrance into the elite of the Lord's army. Nor did he even favor the idea, but as with all the young equines, once he reached his first year, he was called before the Lord himself, to be granted the potion that would turn his mind and body to his dark will.

But the night before, his mother told him her dark secret. She pulled him aside and with a heavy heart told him that he was not truely her son. He was shocked of course, but she wished him to look past that, for her message was of dire importance. "My son, though I am not the mare who bore you, I love you as if I had. And being that I am not your blood, that means that you are different...You needn't follow the path laid at your feet. You my child, have a choice." She replied, and though he didn't understand her meaning at first, it became all to clear the next day.

When his turn came, he fought. He refused to take the elixir, and become a minion. His heart had the purity of his mother within, that fought his darkened upbringing. But the Lord wasn't one to take refusal lightly, and ordered the stallion be held down and forced. With that his orders were met, and was forced into submission, and the potion was given.
He let out an agonized scream as his flesh began to twist and turn. His eye glowed crimson, and his pure white coat began to darken. After all the torment had ended, all gathered in the hall gasped in surprise...This was no ordinary creature now....upon his back, where two bat like wings should have been, was, One dark, and one pearl white angelic one. And his eyes, though reddened, showed the same growing fury for the creature before him as they had only moments before. Not to mention the odd hue of his coat, which was a blackend shade, dapled in white, and his mane and tail a faded gray.

"I shall never serve you Demon!" Bleak howled, and with a mighty toss of his wings, threw his captors off, and soared out the wind*w out into the world he'd only seen through bars before then.
And so his heart was never tainted by the dark potion, but his body was much affected. He's found it quite difficult for his own kind to accept him...but here...within the Sundry herd, he may find solace in the un-judgemental equines within....If only you allow.... Bleak