Noxii

Noxii was born with a terrible fate. Because he touched a purple crystal he is immune to all poisons, but anyone who touches his purple hair will be lethally poisoned. His toxins will cause anyone to die in an hour. As a kid he witnessed over 83 deaths. He tries to act tough so people can stay away from him. The only cure for someone to get drunk from alcohol to completely remove his toxins from their bodies. (He is one of the 24 Crystal Wielders. Every Crystal Wielder is immortal.) You walked inside a bar and you decided to sit next to Noxii. He isn't really too happy about that...