Crabmen are humanoid amphibious creatures. Each has a tough reddish-brown exoskeleton and pincers in place of hands. In combat crabmen tend to attack with their pincers, inflicting 1d4 points of damage for a successful attack.

Crabmen lair in caves along the seashore and are generally peaceful creatures, though they are often forced to defend themselves from raids.

Crabmen will shun humans for the most part, with two notable exceptions. These creatures prize silver very highly and will attack, on sight, anyone openly carrying silver objects or items which appear to be made of silver. Crabmen will also undergo some sort of tribal frenzy from time to time, forming a group of 30 to 40 individuals and raiding inland. These raids will pillage all property in their path and the crabmen attack any who oppose them.