Who is Loki? Is he a raven-haired chap in a green suit with a penchant for deception and depravity? Is he instead a she with blonde hair who prefers to be called Sylvie? Or could Loki actually be an overly sensitive alligator with golden horns and a taste for cats? Truth be told, Loki is all of the above — thanks to the existence of numerous Variants. Okay… so what exactly is a Variant?