It's time for the next round! Who is the greatest villain in the Marvel Universe?
Dr. Doom VS Thanos
Dr. Doom remains not just a fan favorite, but a creeping reminder of the evil that lurks in the Marvel Universe, ready to rear it's head at any opportunity. Doom is the smartest man in the Marvel Universe - yes, even smarter than his hated enemy Reed Richards - but like all great villains, his hubris blinds him to his own potential. Not content with mastering only science, Doom is also one of the most powerful magic users in the Marvel Universe, and was once considered a rival to Dr. Strange for the title of Sorcerer Supreme. Doom is almost always portrayed as the de facto leader of Marvel's villains in numerous media, and with good reason.
Before catching the briefest glimpse of Thanos in the end credits of the Avengers film, most mainstream audiences probably hadn't even heard of the mad titan. But longtime Marvel readers know him as the cosmic badass who long possessed the reality-altering Infinity Gauntlet, and who slew half the universe, including many Marvel heroes, before his misdeeds were undone. He just closed out an appearnace in Infinity, where Thanos once again threatened the Earth in pursuit of his nefarious goals, Thanos will most likely rise to prominence as one of the villains in Marvel's upcoming Guardians of the Galaxy, part of its second wave of films.
Dr. Doom VS Thanos
Magneto VS Green Goblin
Magneto has straddled the line between hero and villain over and over again since his introduction in the '60's, and his current status quo places him somewhere in the grey area between the two extremes, but in his villainous days Magneto has often been one of Marvel's most ruthless villains. It's Magneto's dichotomy that makes him so compelling, and so effective as a villain. It's hard not to sympathize with Magneto knowing his suffering at the hands of the Nazis, and understanding that his extreme views have often been pursued while attempting to build a future for mutant kind.
In recent years, Norman Osborn has caused more trouble under his own name than that of his grinning, cackling alter ego, even taking over as one of America's top cops in Dark Reign, culminating in his comatose body somehow escaping its hospital bed after his defeat at the hands of the Avengers. Norman Osborn was secretly the Green Goblin, one of Spider-Man's greatest foes, and not only the man who killed Peter Parker's true love, Gwen Stacy, but also, in his secret identity, the father of Peter's best friend Harry Osborn.