This is a large Sonic standee.
A standee is a cardboard (usually) item that's used to promote something inside retail stores. Standees are always cut outs of characters or vehicles. They're generally a fun eye-catcher for promotions. Sometimes, once a promotion ends in a store, a fan can get their hands on the standee.
In this case, someone's gotten a hold of modern Sonic. Isn't he a neat room decoration? This is probably about 4 feet tall. You can see a hazard though: they can be bent, and the large size increases the liklihood. Because he's all CG, it looks fairly 3D and nice, with a crisp white background.
The question here is where is it from, and where was he used? Down by the logo at the foot, the only branding is "Sega Europe", so it could be any country at all there. Have you seen him?