FusionDex

Noisian lounge about at the entrances of caves in huge numbers, shrieking at one another. When night falls, they all take flight, hunting in huge swarms; their ultrasonic waves can disrupt radio communication devices in the area nearby.

A Noisian's six bold whiskers sense air movements to determine what is in its vicinity. Even a robust wrestler will become dizzy and unable to stand when exposed to its 200,000-hertz ultrasonic waves.