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