[[Category:s]] [[Category:s]] [[Category:s]] Krogan Berserkers are tank-bred krogan created by the warlord Okeer. They were bred in an attempt to create "perfect krogan" - krogan who lacked the genophage's genetic markers, and who lacked the "weak genes" bred into the krogan population as a result of nurturing every surviving newborn, no matter how feeble. While in their tanks, these krogan were shown images such as the vulnerable parts of alien anatomy and how best to take advantage of them, as well as past battles in an attempt to both prepare them for war and inspire hatred for Okeer's enemies. The krogan were also educated by what one berserker described as a 'voice' or 'scratching sound', which taught them how to speak, move and fight.