Found in sylvan woodland, often along with fauns, unicorns and similar creatures, brownies are shy and retiring. They can sometimes be persuaded to help good aligned creatures. They are skilled craftsmen, adept at making and repairing ordinary things, and highly magical; they may use the following spells once each per day: confusion, continual light, dancing lights, dimension door, mending, mirror image, protection from evil, and ventriloquism. They may become invisible at will, provided they remain still while doing so. They are also lucky and strongly defended against magic, which means they make all saving throws as a 7th level cleric does.

Thanks to their excellent senses and habitual alertness Brownies cannot be surprised. They speak their own tongue, elven, halfing, and can communicate with other fey creatures such as spites, nymphs or dryads.