So i was browsing throught r/sonicthehedgehog and i found this post, that got me interested. Some Sonic expression from Sonic Forces being photoshopped to look "better". And it got me thinking that in most Sonic games the expressions in the characters are either unable to see or very lazy. The only games that i can see very expressive faces are Sonic Riders and Sonic Boom: Rise Of Lyric, those games have really expressive faces.
https://pbs.twimg.com/media/FApy9w-WQAIrxNr.jpg
https://i.ytimg.com/vi/H6AJIbcarwo/maxresdefault.jpg
This just make the faces in Sonic Forces look more drunk with those eyelids as eyebrows.
Javimaster 
rocknight1991 
NicoCW 
ZeRo-BaSs