Hill giants always dwell in caves or similar underground habitations.  These lairs are typically of forsaken areas.  Hill giants sometimes have other creatures in their lairs to act as guards:  this is 50 percent likely and the guarding creatures will be 2-8 dire wolves (1D20: 1-10), 1-3 giant lizards (1D20:  11-16) or a group of 2-8 ogres (1D20:  17-20).  If more than four hill giants are encountered in their lair numbers 5, 7 and 9 will be giantesses (treat as Elite) and 6, 8 and 10 will be young hill giants (1D20 × 5 percent of full grown).

Adult hill giants are able to hurl rocks up to 140 kilogram-meters (effective range: 70 meters, damage: 1D+17).  They are able to catch similar missiles 30 percent of the time.  Half of all hill giants also speak ogre.

Whenever they leave their lair hill giants will always have a huge sack with them.  Hill giant's bags contain various odds and ends of things precious only to the giant:  a large rock or two, and 10-60 coins of some type — usually gold.

Although hill giants are stupid, they are usually cunning, too.  They can sometimes be tricked and will be likely to bargain if approached from a position of strength.  It is not unusual for hill giants to agree to share in an undertaking with a group of creatures of similar disposition, for these huge monsters are eager for treasure.

Young hill giants will have hits and do damage according to the percentage of a normal adult male indicated by the dice roll.