Been a while since I encountered someone stealing my work, hasn't happened since my minecraft days, but unfortunately the Sonic community has a reputation for people taking others hard work for their own gains.
This dude, Rickard Biörick, has stolen mine, along with many, MANY other artists works, and posted them publicly as his own characters, without credit or acknowledgement of the original creators whatsoever.
Enough is enough. He can't keep getting away with this. I don't know everything, but here are a Journal that does go into it a bit better than I have, this dude needs to be made aware of the damage he's doing in art circles a