Behold: Pixar's Tony Stark! Or, as close as we're likely to get, anyway.
Disney does own both Pixar and Marvel, though, so although it's probably never going to happen, it's not utterly impossible.
Easter Egg: if you take a look at the high-res image, you can see that Tony is enjoying an Aperture Science-brand beer. I don't know if I'd trust that drink, Mr. Stark!