For as long as videogames have featured realistic faces, videogame designers have been ripping off celebrities to make their characters. Games Radar is not talking about stars who license their faces to appear in games, but about characters who look eerily similar to those stars. On purpose.
It's not necessarily through malice or lack of originality that these characters are created. It's just that it's difficult to come up with new, believable faces and personalities, and drawing from someone you recognize - like, say, a famous actor - can make it a lot easier. It's something writers and artists do in all fiction media - novels, comics, even movies - and it frequently gets covered up before that work is finished. Sometimes, though, the artists leave the source of their inspiration just lying around in the open, waiting for someone to take notice. Some are obvious, others less so, but when they show up in videogames, they offer unique opportunities to control and humiliate famous people - or just carry them to victory.