I think that takes place mostly at the level of player performance. In my years playing WOW, often when I see a black avatar it is named in a silly way (usually based on stereotypes) or constructed visually to highlight the disjunction between the skin and the other options for visualization (most notably the hair).

On the Blizzard side of things, brown-skinned avatars and characters are exceedingly rare and the fictional environment seems to displace race onto monstrous bodies. Of course, this is an issue predominantly with genre and a trend throughout fantasy MMOs (EverQuest being one of the rare exceptions).

A. The character model is brown. Look closely.
B. Whatever his stated reason was it fits into a chain of signification that I believe connects to racial stereotyping (the skin, the voice, the name, the performance). Race and its signification often exist even when its disavowed. Just because the player says it doesn’t exist doesn’t mean it doesn’t exist, in my opinion.
C. I know that. And it is based off the character model—just with white skin.

Except there are 3 things you might have needed to research first before making that claim,

A) The fact that Leeroy’s character model was indeed a white skinned character model as displayed in on the card.

B) The player behind Leeroy is also a white man who in an interview stated the only reason he mentioned the chicken was because he had been away from the keyboard reheating chicken when the “meeting” was taking place.

C) The Card was drawn by Mike Krahulik of Penny Arcade who based it off of Leeroy’s character model and, if you’ve ever been to Penny Arcade you will know that they generally do not care about offending a few people so they would have made the guy on the card black if he had really been portraying a black man.

That said I understand the point you are trying to make, but you are using an example that does not fit, to teach a point that I don’t think you have thought out entirely.

What are some examples of this?