Sonic.

Story

This takes place at the alternative timeline of Sonic 3 & Knuckles while Sonic was fighting Robotnik alone at Angel Island. Robotnik managed to get a good hit on him, causing Sonic to fall into the depths below. That's when the Grimeware virus struck. It consumed him from the inside leaving a hollow husk of a vessel for Grimeware to take control of. It seeks to find and feed off of other victims one by one in brutal and horrific ways to add to its hivemind. Time had passed since Sonic went missing, and his friends grew more concerned about where he could be, as they investigated throughout the island, until inevitably falling victim into Grimeware's twisted tricks and traps to add more to it's grotesque mass.

Appearance (Disguise)

Grimeware looks like Sonic but with purple fur, a crooked mouth, pale red sneakers and stitches on his stomach

Appearance (Normal)

In normal form, Grimeware looks like Sonic but with a black hole with yellow eyes from all the holes, his ears are crooked and his needles are unkempt and his mouth has nervous yellow teeth and a hole with one eye on his forehead and on his lower abdomen you can see protruding intestines with meat sticking out on his arms

Appearance (True)

He looks like a very disfigured Sonic with brown tentacles covering almost his entire body, not long and the eye hole has a lot of eyes with teeth, his chest is badly torn and his hands have become very large and his gloves are torn and claws are visible

Personality

Grimeware is a cruel and sadistic entity, it uses it's ability of transformation to hunt it's prey, nobody survives it when it's in need of food...

Aliases

Sonic (Disguise Form) Skinwalker (Normal Form) Grimeware (True Form)

About Grimeware

Grimeware, formerly known as Skinwalker, He is a Virus that infected Sonic at the time of Sonic 3.