It sort of looks like a dart, except much bigger and much more dangerous. It has a red paint in the middle and has a pointed end that helps it to stick to a place. Whenever it's about to generate sound waves, a red spot starts blinking in the middle of the red paint.
It is a weapon that can be used for projecting multiple, uncontrollable sound waves. Its sound waves are so strong, they are capable of cracking walls, similar to an earthquake.
Ben 10: Ultimate Alien
- Double or Nothing (first appearance)