Chief Scalpem is the sixth boss from Sunset Riders. One of the three henchmen of Sir Richard Rose, he is the chieftain of a native tribe, working for Richard only to protect his tribesmen. Even so, Scalpem got a bounty of $60.000 over his head. The four bounty-hunters Steve, Billy, Bob and Cormano go after Scalpem at his reserve, fighting him in a one-on-one battle. Scalpem is defeated, but his sister rushes to his aid and pledges mercy, which the bounty-hunters grant.

The fight against Scalpem is infamously difficult, mostly due to the weird hitboxes of his knifes. He will constantly jump around the place, using his knifes to block bullets and tossing them. If the player gets too close he will slash him.