While garappa encounters are much rarer than kappa, they share with kappa a similar relationship with humankind.
Garappa are physically stronger than a human, and easily capable of overpowering grown men larger than them. They are extremely fond of sumo wrestling, at which they are highly skilled.
Despite their reputation as tricksters, garappa are absolutely dedicated to keeping their word. When captured or bested in contest by humans, they are usually forced by their victors to promise to stop drowning people, playing pranks, making noises in the woods, or similar concessions.
Over the centuries, Shinto sects which revere garappa have worked to earn promises from them to cease doing evil; as a result garappa attacks have become less and less common over time.
Garappa also occasionally serve humans by catching fish or planting rice fields, and they are credited with teaching the ancient people of Kyushu the art of making poultices.
Physically, garappa are almost identical to kappa, the most notable difference being that a garappa’s limbs are much longer than those of a kappa. When garappa sit down their knees rise high above their heads, while kappa’s knees do not. Because of these longer limbs, garappa are taller than kappa when standing upright. Garappa also have slightly longer and more streamlined faces.
Garappa are much more shy and elusive than kappa, and tend to avoid populated areas. Instead, they wander back and forth between the rivers and mountains. They tend to live in smaller groups, or by themselves. Because of their shyness, garappa are more often heard than seen. They have two distinctive calls: “hyo– hyo–,” and, “foon-foon-foon.”