Gellybones are skeletons that have passed through a special magical procedure that transforms their bones into a gelatinous material. They take only half damage from blunt weapons, and only a single point from arrows, bolts, or sling stones (plus any magical bonus). As with all undead, they can be Turned by a Cleric, and are immune to sleep, charm, or hold magic. As they are mindless, no form of mind reading is of any use against them.