It was announced awhile ago that Robert Downey, Jr.'s Tony Stark would make an appearance in Homecoming, and from the trailers, it looks like Iron Man will actually have a pretty big role. The movie looks like it'll further develop the mentoring relationship established between Tony and Peter in Civil War, although there'll be a lot more tension this time around. Tony doesn't want Peter to suit up, instead telling him to focus on high school, something the budding hero clearly isn't willing to do. This causes problems between the two, highlighted in the second trailer, in which Tony takes away the high-tech Spidey suit he gave Peter after a botched rescue mission. "I'm nothing without this suit," Peter tells him. "If you're nothing without this suit, then you shouldn't have it," Tony responds.
The tension should provide a new take on the relationship initially established in Civil War, and will also likely force Tony to take on a more serious and fatherly tone than he has in the past. This should also help to set the movie apart from past Spider-Man films, giving Peter a new mentor—and more reasons to question whether he's capable of being a hero.
However, there will still be light, funny moments between the two. "Just don't do anything I would do," Tony tells Peter in the first trailer. "And definitely don't do anything I wouldn't do. There's a little gray area in there and that's where you operate." Now that's advice we'd like to see someone try to follow.