Has anyone thought that maybe this is an inside joke between R* devs and not an actual person in the game named Gavin? I’m betting on yes. I could be wrong, but since there is no voice actor named Gavin I think I could be right. Yes, he could be a mute or he could be dead or he could be an animal. But the letter mentions him being an Englishman. That doesn’t necessarily mean he is a man, but until we have proof of someone named Gavin in the game (which I think personally there isn’t) then I will believe Gavin is nothing more than an inside joke between devs. Because there is a Gavin in the credits, but he is a man that worked on the game, not a character.