Temperaments are undead storm giants. Their skin is the deep black of a thunderhead just before an electrical storm. Sparks and lightning bolts, neon blue in color, dance along their bodies, while larger lightning bolts several yards in length constantly shoot forth from the eyes and mouth. When they are outside, they can summon at will a miniature thunderhead above their heads to enshroud them in their own private thunderstorm. It doesn't inflict damage in combat, but it's frightfully impressive, especially at night. They can also take the form of a crackling thunderhead, though in that case, the only attack they can make is the lightning strike listed below. The giant's movement rate in this form is l5, but all other attributes remain the same.

Combat: Temperaments have one physical attack per round: either a blow from a lightning-sheathed fist that inflicts 2d10+12 hp damage, or a weapon strike that inflicts up to 3d12+12 hp damage on the foe. Unlike other undead giants, they cannot hurl boulders.

Once per round, in lieu of a physical attack, a temperament may shoot a massive bolt of blue lightning. This lightning strike inflicts 4d10 hp damage to the victim, or half that if a saving throw vs. wands is successful. Making a second save vs. death magic protects the victim from the energy-draining properties of this lightning bolt, which steals one level away from the target. (Unlike other undead giants, temperaments can only make an energy draining attack as part of a lightning strike, not by physically touching the victim.) Those who are slain by this attack become half-strength temperaments under the control of their slayer. Giants are an exception to this, becoming regular temperaments. The electrical attack of these new recruits inflicts only 1d8 hp damage, while their Strength is no greater than it was in life. Upon the death of their “creator”, these new monsters become free-willed undead who wander off to find their own lairs.

Temperaments are immune to both cold- and electrical-based attacks, as well as mind-affecting magic, sleep, hold, poison, death, and paralyzation. Holy water inflicts 2-8 hp damage per vial, and a raise dead spell utterly destroys them. Normal weapons, or magical ones of less than +3 enchantment, do not harm them. Although they wear no armor, their skin is desiccated to the point that it has a natural armor class of —6. These undead creatures are immune to sunlight and are not bothered by it in the least. This is partly because of their light-producing electrical nature but also because the small thunder-head that they invariably summon up when they go outside provides them with ample shade.

Habitat/Society: Temperaments are the most solitary of all undead giants; they are only found alone. The only exceptions are half-strength creatures created by the slaving of other giants, and these are not true equals. Temperaments often make revenge attacks on their former families, wiping them out so as to deny them the pleasures of life.

Ecology: Temperaments eat no food and are sustained entirely by energy from the Negative Material Plane. They do, however, obtain satisfaction from draining the life energy of living things. All animals sense the presence of these undead monsters and shun the areas they call home; temperaments dwell in the same places where storm giants do. Temperament bone or essence is considered just the thing for the finest quality wands of lightning, or a nonmetallic ring of shocking grasp.