Peter Quill (Star Lord)/Will Friedle
The voice doesn't fit the look. I don't know why Friedle is using his Ron Stoppable voice. Terry McGinnis would have been a BIT more appropriate (a bit). Friedle's voice is youthful, mischievous and profoundly high-pitched. So here, it looks like there's a teenage boy trapped in a huge man's body.
Either re-cast (I still love you Will!) or make the character less brawny(which they probably won't). In the comics, Peter doesn't even look anything like in the promo and Chris Pratt sometimes has that "dumb goofy" look on his face. In the promo, he looks, how can I say this, quite rigid looking.
https://www.youtube.com/watch?v=MbqVBlMo9Sc