Sonic Shrieker
From Warhammer 40k - Lexicanum
Sonic Shriekers were a type of Sonic Weapon implant developed for the Emperor's Children towards the end of the Great Crusade.[1]
First seen sparingly as experimentations by Apothecaries, such as those given to Lord Commander Eidolon, these psycho-sonic augmentations were based on xenos designs. The Emperor's Children would not have a true breakthrough in sonic shrieker technology until their open allegiance to Slaanesh as the Horus Heresy dawned.[1]
