Giants are hulking creatures that exist all across the Flanaess, but they are particularly numerous amongst the Crystalmists and Hellfurnace mountains. They come in wide varieties, from the rock-tossing hill giants, to lava-walking fire giants. Some also believe that cloud giants exist in floating cities high in the skies.
Giants are generally evil creatures who will completely take over a certain region. From there, they tend to go on murderous sprees of conquering to expand their territories. The Yeomanry League in particular has dealt with numerous giant attacks.
Giants form small bands to hunt and raid, but sometimes a larger group will form. There have even been stories of giant strongholds, with walls reaching up into the clouds.