Been feeling nostalgic and playing some SEGA Saturn! Took me about a week . Open for Suggestions/ feedback.
Hi jperk, welcome to BA 
If you are talking about the black lines in the third screenshot: This could come from loose edges. Chances to get help are better if you post the blend file. People don’t have to guess than.
Nice model so far
Thank you. I managed to fix it by deleting the faces and creating new ones. Seemed to of worked. I finished the model today. Just have to rig it.
Not bad. The eyes could use some work but that’s my only concern.
Not bad. You might have to refer to some reference images in order to make it look like the classic Sonic.