The Marvel Cinematic Universe is rapidly developing and expanding. Most recently, the formation of The Avengers has been the culmination of that development, after origin movies for Iron Man, Hulk, Captain America and Thor put the wheels in motion. In those movies we have seen a rogues gallery that has included Iron Monger, Whiplash, Abomination, Red Skull, Loki and the extra-terrestrial forces of the Chitauri. The possibilities from here on in are both exciting and near unlimited, with years and years of Marvel history to explore. We already know that The Mandarin will be appearing in Iron Man 3 and that Malekith will be appearing in Thor 2. We can also safely assume that Thanos will be appearing more, following on from his brief cameo after the credits of The Avengers, and that Ultron and the Leader will emerge at some stage, given that Hank Pym is set to get his own movie in 2015 and that Tim Blake Nelson has already portrayed Samuel Sterns in The Incredible Hulk movie. But with a villain roster that has grown since Marvel's inception in 1939, imagining who may step up to the evil plate in the future is a mouth-watering prospect for comic and movie fans alike. Let's take a look at 5 villains who would really spice things up in the MCU...
5. Kang the Conquerer
Kang would bring the possibility of time-travel and alternate timelines with him, which would add entirely unexplored dimensions to the MCU which I think could be interesting. Complicated, maybe even messy, but interesting. First appearing in 1964, Kang has troubled The Avengers on the pages of Marvel comics in a way that few other villains have managed. He's from an alternate timeline to the main "616" universe, where he is related to both Reed Richards and Victor Von Doom - 2 characters whom he rivals on an intellectual level, which is something only a handful of beings in fiction can lay claim to doing. Boasting an armoured suit to rival or even surpass that of Iron Man, Kang would be an exciting and welcome addition to the big screen Marvel universe and could take the MCU in an infinite number of captivating directions.