A series of images from a Sonic Movie style guide have been posted to the Resetera.com forum which appear to have originated from the website hcassociates.com which is a video game branding company.
So in case you had any doubt, this is it! This is what Sonic will look like in the movie.
Aside from the design of Sonic it looks like packaging designs for potential merchandise are also in the style guide. Otherwise, I don’t think there is anything else I can say other that ‘there he is!’
Let us know what you think in the comments.