It is on Amazon already!
Lego marvel superheroes get released on March 2012 in Australia.
Maybe on June/July 2013, They will see
I know nothing about Lego Marvel Superheroes specifically, but based on my cursory knowledge of Marvel in general, I'm pretty confident it's Magneto.
Magneto
To purchase DLC for any computer game, including Lego Marvel Superheroes, you can go to Gamestop's website and hover over the PC tab. There, you will the find downloadable content.
Most likely december 2013
Yes, there is two player multiplayer
Yes. Lego Marvel games are definately in at the moment. Lego Marvel Superheroes which was released October 22 2013 has been extremely popular. It features Marvel superheroes such as Spiderman, Iron Man, The Hulk and many more. It is available on a wide range of platforms inlcuding: WII, X Box 360, PS3, PS4 and many more of the major consoles.
Yes, they have made contracts with DC Comics and Marvel to make sets of various superheros such as Wolverine and Iron Man.
You would hit the x button on the controler. Or you could try the y.
Captain Marvel, Blue Marvel, Miss Marvel and Marvelman
Yes... looks like LEGO Superheroes will be coming out soon. I saw a superman LEGO guy on the LEGO site recently... not to buy yet, but should be soon.