Real Name: Dr. Stephen Strange
Species: Human (Sorcerer)
Country of Origin: U.S.A.
Joined the team in: New Avengers #27
Powers/Abilities: Master of magic, once-skilled surgeon, martial artist, genius intellect, longevity.
Who/What Is He: He was once a brilliant neurosurgeon with a god complex, but after a car accident damaged the nerves in his hands and ended his career, he sought a cure in Tibet and sort of accidentally became the Sorcerer Supreme.
Why We Want Him: As the Sorcerer Supreme, he’s one of the most powerful “superheroes” in the whole of the Marvel Universe. Like the Vision before him, Dr. Strange fills a role that no other Avenger (or prospective Avenger) can fill, i.e. he’s a freaking sorcerer. Furthermore, he opens up a whole new world of terrifying and yet-untapped villains that the Avengers can’t just punch away (see: the alien army in The Avengers).
Then again, you could also argue that Strange is too powerful for the team. How many times has the guy snapped his fingers to send away some abominable force? Well, in the literal sense, probably zero times, but figuratively, too many to count. Of course, with the right creator at the helm – and hasn’t Whedon proved himself in that regard, especially with supernatural characters of Strange’s ilk? – he could do far more creative good than evil.