If you’re playing Red Dead Online - the expansive multiplayer component for Red Dead Redemption 2 - there’s a way to meet up with a character from the first game.
Just like in single-player, Red Dead Online has a range of stranger missions you can pick up as you explore the world. One of them lets you meet a fan-favourite character from Red Dead Redemption.
Head to MacFarlane Ranch and you can meet Bonnie MacFarlane there. If you walk up to her as she sits on the porch, you get a cutscene that looks like this:
In the mission, Miss. MacFarlane wants you to track down a lost cart. Go to its location, shoot the dudes, and ride it back to the ranch.