There have been a number of Metahuman assets created that are named after and resemble popular actors and actresses. These assets claim that they can be used in Games, but doing so would incur liability for likeness rights from these aforementioned actors.
If I as a lay individual want to help clean up Fab, I cannot because the only individual that can make a copyright infringement request is the copyright or likeness holder. But not only that, if I click on the blue button link, it takes me to a “page not found”.