We Can expresses Team Sonic's dynamic pretty well, being a song about how its members bring out the best in one another and become stronger as a result.
At the end of the game, after Metal Sonic is defeated, and Sonic delivers the "Because we're Sonic Heroes!" line, all of the other characters go about their business with each other and leave Metal Sonic lying on the ground alone...except for Omega, another robot himself, who stops to pick up Metal Sonic.
Shadow stands there with him and they exchange a glance. Seeing as these two were at each others' throats at the beginning of the game, this is a fairly sweet (and somewhat sad) moment.