One of the most best comic book movie villains of all time is Tom Hiddleston's Loki. Both in terms of level of performance by an actor and popularity amongst fans, Loki is up there with the very best. Arguably, Hiddleston's Loki is the only character to come anywhere close to rivalling the late Heath Ledger's performance as the Joker in Nolan's Dark Knight. So, if Marvel were to emulate this level of villainous success, which characters would they need to call upon? Marvel Comics possess a veritable army of great villains, but only a small number of them could surely have a chance at overthrowing Hiddleston's Loki as the greatest Marvel movie villain of recent times. The character to do so would need to have a lot of depth and personality, so someone like the Leader who is a fairly boring low level telepath wouldn't stand a chance. In this article, we'll be taking a look at eight characters that could be brought to the big screen and become more popular than Hiddleston's Loki (note, this won't just refer to the Marvel Cinematic Universe, it will include villains who could appear in several of the Marvel movies, including those produced by Fox and Sony). So here we go...