Gray Fullbuster seemed pretty straight forward at first. He was an Ice mage with a stripping habit, not much was kept hidden. Granted, he wasn't to comfortable talking about his past, but after the events of Galuna Island, he finally opened up to the rest of the guild. On the day he finally told everyone about what happened; about his home being destroyed, Deliora, Ur's sacrifice, Lyon's actions, there wasn't a dry eye in the guildhall.
Save for Gray's, but with his tightly clenched fists and the slight tremble to his body, they could tell he was forcing himself to remain calm, he'd cried enough. It had been Mira that finally approached him, pulling the raven-haired male into her arms and just holding him. And her heart broke at his soft, shuddering intake of breath as a few tears finally slipped down his cheeks. But other than his previously hidden past, Gray seemed like he didn't keep too many secrets.
But he did. Gray had one secret that he kept tightly guarded. So well hidden that not even Lyon and Ur knew about it. He intended to keep it that way, his own little secret that no one else knew about. Sure, he gave small hints to it, let the rumors fly about what he was hiding, just for fun, but he'd never let anyone know.
He couldn't let anyone know, that he wasn't human.