It's been awhile since, I've drew Sonic. After finish linearting Icy in Photoshop, I did a freehanded lineart Sonic in Paint Tool Sai, and border the outline with Photoshop. Credit to Nini () for given me suggestion on the lineart. For color, I was inspire by one of the tekken tag tournament 2 - Tekken 7 artstyle. The pose is reference from the Dr. Faust scene by Dante from Devil May Cry 5.

Sketch, Lineart, & color done in Paint Tool Sai
Border outline done in Photoshop CS6

Sonic The Hedgehog (C) By Sega/Sonicteam
Artwork (C) by Mike "ZeroR102" Rome

https://www.deviantart.com/zeror102/art/Smooth-Criminal-Sonic-853274622