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.

Some directors are known for working with the same actors multiple times, and "Superman" writer/director James Gunn is definitely one of those filmmakers. So it should come as little surprise that at least three "Guardians of the Galaxy" actors make cameos in the upcoming "Superman".

Opinion is sharply divided as to how high the superhero pic can fly when it hits theaters, with some suggesting a much lower range of $90 million to $120 million.