And of course, Gunn's own brother Sean Gunn, who plays Maxwell Lord in Superman, portrayed Rocket Raccoon's physical motion capture performance as well as Kraglin, the Ravager turned Guardian who inherits Yondu's special arrow.

When James Gunn unveiled his plans for the new DC Universe, many fans were skeptical, especially when it came to his interpretation of Superman. For decades, the Man of Steel has stood as the gold standard of superhero power.

The writer/director of this summer's "Superman" and the co-head of DC Studios offers a peek behind the curtain.