The Baseball Bat Girls are three unnamed minor villainesses from the movie Hobo With A Shotgun. They are uncredited actresses.
They are three young women hanging out in the main villain Drake's lair. As Drake talks to his sons, the three topless girls are seen in the background beating a hanging homeless man to death with baseball bats like a piñata. They take sadistic pleasure in making him scream in pain and are frequently smiling and laughing throughout the scene, especially at the end when he finally dies.