Red Dead Redemption 2 Online Mode launched November 27, 2018 and comes with character customization. There are plenty of cutscenes online but your character never says a word. So can your character in RDR2 Online talk? The answer is No, your character does not talk in Red Dead Redemption 2 Online.
Your char is mute, doesn’t matter if you pick a male or female. Only thing he / she can do is whistle for their horse of which you can adjust the pitch and clarity.