The one on the bottom left is the biggest departure, showing a sharp-fanged Sonic in teal with red eyes and a yellow chest ...

That's because it is adorned with LED lights which can be found around its base, on the boosters at the back, and best of all, red ones in Metal Sonic's eyes to make the antagonist feel more alive.

The most noticeable difference between their first and second take is Sonic's eyes. Much like Sega's design, Sonic's eyes are much bigger in the new version. In the old one, his eyes were shrunken ...

Following is a transcript of the video. Narrator: Sonic the Hedgehog famously went through a drastic design change for his first Hollywood film. Fans were so upset at this [screaming] that the ...