From Quake Wiki


"These armor-plated, techno-advanced scorpion creatures are huge and pissed. They carry dual nail guns for claws to get your attention, but get too close and you'll have a stinger in your face."

Health 300
Gib threshold -35
Attacks nailguns, tail sting attack
Drop nothing
1st appearance hip1m1
Game version Scourge of Armagon
Death message Player was stung by a Centroid
† The data files for monsters that appear only in the registered version of Quake reside in pak1.pak rather than pak0.pak.

Centroid (also known as scourge) is a man-sized cybernetic scorpion with nailguns for claws and a highly-damaging tail-sting attack. It employs some unconventional dodging AI.