FREQUENCY: Very rare ([Cold Wilderness Hills], [Cold Wilderness Swamp], [Cold Wilderness Plains])

FREQUENCY: Very rare ([Temperate Wilderness Hills], [Temperate Wilderness Swamp], [Temperate Wilderness Plains])

FREQUENCY: Very rare ([Tropical Wilderness Swamp], [Tropical Wilderness Plains])

NO. APPEARING: 1-4 (rarely 1-6)
ARMOR CLASS: 1
MOVE: 15"
HIT DICE: 14
% IN LAIR: 50%
TREASURE TYPE: [E]
NO. OF ATTACKS: 1 ~ 8
DAMAGE/ATTACK: 4-24
SPECIAL ATTACKS: Hurling rocks for 2-20 points of damage <Grenade-Like Missiles: Boulders>
SPECIAL DEFENSES: [SB]
MAGIC RESISTANCE: Standard
INTELLIGENCE: Average to high
ALIGNMENT: Neutral (good 50% evil 50%)
SIZE: L (18' tall)
LEVEL/X.P. VALUE: VIII | 3,950 + 18

Fog giants are cousins to the cloud giants and if on very rare occasions
as many as six fog giants ere encountered, they will always be accompanied
by a cloud giant.

Fog giants have very keen hearing and a highly-developed sense of smell.
For these reasons, they are surprised only on a 1 (d6). They
also have the ability to blend into fog, thus gaining surprise on their
opponents (80% chance). They inhabit foggy areas such as marshes,
swamps, dense forests end places near the sea coast.

Fog giants have milk-white skin, silvery white hair and black, penetrating
eyes. They love massive ornate swords and prefer armour made
from white dragon hides studded with silver. In melee they fight
either with the swords they love or with their fists, in either case
inflicting 4-24 HP of damage on their victim. Their armour, if
worn, has no effect on their AC which is always treated as 1.

Hurl Rocks: Adult fog giants, like their cloud giant cousins, can hurl rocks from 1"
to 24" distance, inflicting 2-20 hit points of damage if they hit. They
have a 45% chance of catching similar missiles.

Fog giants speak their alignment language and their own particular
dialect of the giant language, unintelligible to all other giants except
cloud giants. <added to DMG>
 

    by Jean Wells