Unicorns are horselike creatures having a single spirally-twisted horn in the middle of the forehead. A typical adult unicorn grows to 8 feet in length, stands 5 feet high at the shoulder, and weighs 1,200 pounds. Females are slightly smaller and slimmer than males. A unicorn has deep sea-blue, violet, brown, or fiery gold eyes. Males sport a white beard.

Unicorns normally attack only when defending themselves or their forests. They either charge, impaling foes with their horns like lances, or strike with their hooves. The horn is a +3 magic weapon, though its power fades if removed from the unicorn.