#echidnas?

Yesterday,I was looking at the Baby sonic Japanese movie clip/trailer when I noticed something in the background...

I know they are probably some other kind of animal however, the first time I saw this I saw them as echidnas because they seemed to have a similar body shape to knuckles, similar shoes, They seem to also have dreadlocks and a tail that is a bit like an echidnas tail. 

before I did anything else, I decided to edit the pictures lighting So the characters in the background could be more noticeable. This is what I got:

At last, I did some line work so you guys can see what I see. This is the result of that:

I know it looks terrible but it’s just so you guys can get what I mean

I am 99.9% sure I am completely wrong but I just wanted to have some fun theorizing something.