*Sadie Adler is a recurring character in the Red Dead series; she appears as a central character in Red Dead Redemption 2, and as a stranger in Red Dead Online.

Sadie grew up in a harsh environment and learned to hunt animals and ride horses in her youth. On September 7, 1896, she became married to Jake Adler. The couple lived on a ranch in the state of Ambarino, where they shared the work evenly between them and had a happy marriage.

When the player first arrives at the Adler Ranch, they meet Jake, who initially believes that they have come to rob him, but eventually deduces that they are actually looking for work. Sadie walks in moments later, having just completed a supply run, and is shocked to see the player, holding them at gunpoint. Although Jake clarifies that the player is only there to help, Sadie continues to act suspiciously and warns the player that should they betray her or Jake, she would kill them without a second thought. Still, Sadie is appreciative of the player's assistance.

The player can then visit the Adlers again and receive more missions from them. Sadie will give missions during nighttime, while her husband is available during the daytime. Their missions give positive honor.*