Look at that image! It's horrible! That's nightmare fuel! It's like mutated Thunderbirds puppets reprogrammed to murder us all! Who on Earth thought this was a good look?! What were they thinking?!
Now, of course, you CGI up those characters so that they fall somewhere between naturalistic and totally fake. In a word: creepy. Sonic in the new Sonic the Hedgehog movie is the most recent character ...