As ivolt brought out, different characters can represent different consoles. If you see something from Halo, you're not going to think of the Wii, you're going to think of the XBOX or the 360. If you see Metal Gear Solid or Final Fantasy, boom, you're thinking of one of the Playstation consoles. Mario or Link bring Nintendo to mind, and so on. There's not one definitive character icon for video games.