My girl had a cake made for my birthday on the 20th. Other than Sonic and the rings on the top the rest is completely edible. There are even Sonics on the side (you can see the tips if his spikes) that are edible. It's good too and bigger than it looks. Four layers of red velvet cake under that amazingly sugary outer layer with a softer creamy frosting under layer.
FYI that's one of our friends slightly in the shot wearing a chibi Batman shirt.