Wreck-It Ralph, Vanellope Von Schweetz, Fix-It Felix and Tamora Calhoun. ...Wait a second...
I couldn't limit myself to a dream TEAM, though... I'd need an entire dream army.
I guess the "dream team" could be made up of everyone I put in a higher-up position, and I think that would go something like this:
Doug Walker(guy who knows everything), Nostalgia Critic(raw power and persistence), Mark from Classic Game Room(the guy everyone loves), WIR/Vanellope/Felix/Calhoun(ultimate team of four), Red from Godzilla NES(guy everyone fears but who we keep around because he can seriously screw over the enemy), Shigeru Miyamoto(the guy who doesn't go into battle but helps around the base, and because video games), Reggie Fils-Amie(because we need someone to be the "catchphrase guy"), Mario(because childhood), Spyro(because childhood), Crash Bandicoot(because childhood), Link(because he's Link), Village Mayor(Animal Crossing), Sprocket(because best Skylander, and I need a right-hand partner), Boomer(because Sprocket-Boomer OTP, and we need a crazy weapons guy), Greninja(Shiny, and because ninjas), Pit(because we need more characters who can fly), Flying Plastic Bag(because we need even more characters who can fly), and last... But not least...
Mann Co. Supply Crate #45 (because we need someone to lead us.)