Geographical location
Most firbolgs live in groups, secluded from the rest of the world.
Common physical attributes
Firbolgs tend to average between 7 and 8 feet tall and can weigh between 240 and 300 pounds. They are covered in thick fur that ranges from earthy colors like browns and reds to cool colors such as grays and blues. Their faces are somewhat cow-like, having long, floppy, pointed ears and broad, pink noses.
Lifestyle
A nature-based, free-spirited peoples, firbolgs lead a simple lifestyle. They tend to be isolated from the rest of the world, living in tight-knit tribes or clans in the mountains or wilderness. They are rarely seen in common society, preferring to spend their days in quiet harmony with the woods. Though peaceful, when provoked, firbolgs demonstrate formidable skills with weapons and druidic magic.
Language
Most if not all can speak common and giant.