X6-88

X6-88 is a synth character appearing in Fallout 4, and a possible companion.

Background
A highly advanced synth, 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.

Shortly after arriving at the Institute, Father tasks the Sole Survivor with helping to retrieve the leader of a band of Raiders, a mind-wiped runaway synth. X6-88 is the Courser dispatched to aid in this task, and a short while after the incident is resolved, becomes available as a companion for the Sole Survivor.

Approval

 * He will approve when you enter a suit of Power Armor.
 * He will approve when you assist scientists of the Institute.
 * He will approve when you hack computer terminals.

Disapproval

 * He will disapprove of selflessly help others in the Commonwealth. Upon meeting X6 at first for the rogue mission if the Sole Survivor does not complete the mission or go to the location he will follow as a 3rd companion anywhere the Sole Survivor goes however, he will pick fights with the Brotherhood of Steel and various other allies

Appearances
X6-88 appears only in Fallout 4.