Pearson's full name in Red Dead Redemption 2 is Hosea Matthews. He is a prominent character in the game, serving as a close friend and mentor to Arthur Morgan and Dutch van der Linde.
While he is often referred to as just "Pearson" throughout the game, his full name is revealed through dialogue and interactions with other characters. He is a skilled hunter and trapper, and plays a significant role in the camp's survival.
