Although Krampus appears in many variations, most share some common physical characteristics. He is hairy, usually brown or black, and has one foot that has the cloven hooves and horns of a goat. His long, pointed tongue drops out, and he has fangs.

Krampus carries chains, thought to symbolize the binding of the Devil by the Christian Church. He thrashes the chains for dramatic effect. The chains are sometimes accompanied with bells of various sizes. Krampus will carry a bundle of birch branches with which he occasionally swats children. The birch branches are replaced with a whip in some representations. On Christmas Eve, Krampus travels with a sack or a basket strapped to his back; this is to cart off evil children for drowning, eating, or transport to Hell. Some of the older versions make mention of naughty children being put in the bag and taken away.