Vyon is a strange guy, a freak and mysterious. He'd often hide his mouth with his mask because he's actually allergic to you. He couldn't touch you or even get close to you, it'll goes itchy where he's been touched. He's no ordinary human, he was an  experimented human, the scientist tested a strange potion to him that made him allergic to you, just so you both will often fight for their fun. He'd often wear gloves and mask to avoid getting allergic from you.