"Look... I'm not great with words.. I'm more comfortable shooting people, than talking to them."
-X6-88 after meeting Skull Face
X6-88 is a synth and one of the few people that did not work with the Fuellers, instead he lead the All-Synth 550th Battle Division of the Axis Army.
X6-88 is an Institute Courser, designed for high-risk assault and retrieval operations above ground. X6 is very capable at engaging enemies at range and is equally capable of direct assault and more subtle approaches. He was involved in the Synth Rebellion and the Great Battle of Endor until he was killed by Piper Wright in her modified M84A Magloader during the First Aftermath