Greapers are ghost-like Shy Guys that appear in the game, Super Mario RPG: Legend of the Seven Stars. They resemble a cross between a Grim Reaper and a Shy Guy. They can be only found in the Sunken Ship.
In battle, Greapers mainly attack with their scythes. They are also capable of special moves such as Crystal.
Being ghosts, Greapers can be quickly taken out using a Pure Water.