Skull mercenaries are the protectors and dealers of the Skull Underground Camp. They were introduced with the Stolen Hearts quest. They are used as hired muscle in the Stolen Hearts quest, But instead of getting their money for kidnapping Prince Ali they and Mercenary Joe got hypnotised by Lady Keli and attack the player. However, they are fairly easy to defeat. Some non-interactive mercenaries can also be found arm-wrestling in the Skulls base. One of the mercenaries is using a silver Saradomin Sword.