Game Character Copyright Infringement

Summary

The users friend has taken legal action against a website that sells stolen avatars from a game. The game company has implemented an anti-cheat system to prevent modifications to the game. Despite these measures, the website remains operational. The friend continues to file lawsuits whenever he sees his copyrighted character on the website.

Full Conversation

I'm in a game where personal characters are getting ripped from players and sold on one website. Is that legal?
What is the game's terms of service regarding the sale of characters?
Anything goes but the use of mods to get avatars is a bannable offense
What is the location of the game's company? This will help determine the jurisdiction and applicable laws.
The US
What state is the company based in? This will help determine the specific laws applicable to your situation.
Tennessee
What actions have you taken so far regarding this issue?
A friend of mine had legal action to take down his own copyrighted character
What was the outcome of your friend's legal action?
They took down his avatars but kept the website up
What was the basis of your friend's copyright claim?
He is the sole rights of his character models
What evidence does your friend have to prove he is the sole rights holder of his character models?
I dont know for sure
What kind of documentation or proof did your friend provide to establish his copyright claim?
He didnt say
What kind of legal action is your friend considering now, since the website is still up?
He just files a lawsuit whenever he sees his character on there
What is the name of the website where the characters are being sold?
https://ripper.store/
What is the nature of the game? Is it a multiplayer online game or a single player game?
It's a website that sells stolen avatars from a steam game
What is the name of the Steam game from which the avatars are being stolen?
VRChat
What specific actions does the game's company take against players who use mods to steal avatars?
They try to not allow mods on the game but they find a way
What actions has the game company taken against the website selling the stolen avatars?
Nope
What actions, if any, has the game company taken against the website selling the stolen avatars?
They added an anti-cheat
What actions has the anti-cheat taken to prevent the theft of avatars?
It doesn't allow modifications to the game
What actions have been taken against the website selling the stolen avatars by law enforcement or legal authorities?
There are none
What specific legal actions has your friend considered or taken against the website selling the stolen avatars?