Sacksquatches are bags of sand that have become animated, with a relatively simple design that consists of a cartoony face on the front of the bag, its mouth being a tear that spills forth the sand inside. The sacks are said to have been born from bags of sand that were abandoned at the construction site of a factory. They attack by spitting up the sand at opponents' eyes to blind them.
Sacks of sand left on the construction sites which eventually sprung to life as monsters. They love to play pranks, particularly ones involving sprinkling sand where you least want to find it