To defend themselves from danger, Deiwak rattle their bony club against the ground to locate their foe with sound waves. Once they have a grasp on where their foe is, they toss their club to whirl through the air like a boomerang.
A Deiwak is the evolved form of a Cubone that has grown tough by overcoming the grief of losing its mother. They cannot see, so they tackle and bite to learn about their surroundings.