Doctor Strange
A former surgeon, Dr. Stephen Strange was an arrogant and concieted man. But when his hands were damaged in a car accident, he was unable to find any treatment. In desperation, he turned to an old legend he heard, about a healer called the Ancient One living in Tibet. To his surprise, the Ancient One existed. After learning to use magic to foil an attempt to assassinate the old sorceror by his own student, Baron Mordo, the Ancient One accepted Dr. Strange as his successor to become Sorceror Supreme of Earth.
One of the most powerful magic-users in the Marvel Universe, Dr. Strange has saved the world from mystic threats such as Dormammu and Shuma-Gorath. However, due to being forced to use dark magic to stop the Hulk who was attacking the world, Dr. Strange was replaced by Brother Voodoo as Sorceror Supreme. Nevertheless, Strange remains a powerful mystic hero. (He is still Sorceror Supreme in Ultimate MvC3 canon, according to his victory quote)
UPDATES........Nemesis trailer and Screenshots
Nemesis
Nemesis was created by the European Branch of the Umbrella Corporation's pharmaceutical company. He was designed to have immense strength and power, yet to also be intelligent enough to follow orders and overcome obstacles, but not intelligent enough to rebel. This particular Nemesis was deployed to Raccoon City to kill any remaining members of the S.T.A.R.S. unit, which had become an annoyance for the corporation. His first victim was Brad Vickers, who he impaled through the the mouth with a tentacle.
Nemesis targeted Jill Valentine as his next victim. Jill managed to evade Nemesis throughout the city, but Nemesis continued to come after her, effortlessly taking down any obstacles in his way. After he shot down a rescue chopper and infected Jill with the T-Virus, Jill was forced to confront her attacker, managing to beat him with a barrage of explosives.
Nemesis wasn't truly gone. His jacket burning off signaled his second mutation. Continuing to chase a now cured Jill, she stopped him again by drowning him in chemicals in a waste management facility. Nemesis survived as a hunk of dissolving flesh, and devoured a dead Tyrant, mutating again into a huge tentacled monster. Jill managed to defeat Nemesis for good with the Rail Gun and a magnum to finish the job.
Ultimate Marvel vs Capcom 3 will be available in stores November 15.